CriticalCVE-2026-33211

    Tektoncd Pipeline: Path Traversal (CVE-2026-33211)

    Published Last modified Sources: Red Hat, OSV, CVE.org, BSI

    What is affected, what to do

    A flaw was found in Tekton Pipelines, specifically in the Tekton Pipelines git resolver. A tenant with permissions to create ResolutionRequests can exploit a path traversal vulnerability via the `pathInRepo` parameter.

    Update tekton_pipelines to version 1.3.3, OpenShift Pipelines to version 1.21.1.

    Affected
    • Tektoncd Pipeline gte 1.0.0, < 1.0.1..*

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    9.6

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: NVD, CVSS v3

    9.6

    CVSS v3

    Severity Critical on the scale from 0 to 10.

    Source: Red Hat, OSV, CVE.org, BSI

    0.6 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 47.7

    Show all metrics
    Severity
    Critical
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    81.68 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    9.6 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    9.6
    EPSS score

    The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.

    Read in glossary
    0.6 %
    Low — model estimates < 1% exploitation likelihood.
    EPSS percentile

    The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.

    Read in glossary
    47.7
    High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published
    CWE

    CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.

    Read in glossary
    CWE-22

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    A flaw was found in Tekton Pipelines, specifically in the Tekton Pipelines git resolver. A tenant with permissions to create ResolutionRequests can exploit a path traversal vulnerability via the `pathInRepo` parameter. This allows the tenant to read arbitrary files from the resolver pod's filesystem, leading to information disclosure, including sensitive ServiceAccount tokens. The contents of these files are returned in a base64-encoded format.

    Source: redhat_csaf, OSV (Open Source Vulnerabilities), cvelistv5, NVD (NIST), CVE.org (MITRE), BSI WID Portal, BSI CSAF

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    tektoncdpipeline
    • ≥ 1.0.0, < 1.0.1
    • —
    linuxfoundationtekton_pipelines
    • 1.1.0 – < 1.3.3
    • 1.10.0 – < 1.10.2
    • 1.0.0
    • 1.4.0 – < 1.6.1
    • 1.7.0 – < 1.9.2
    • 1.3.3
    • 1.10.2
    • —
    • 1.6.1
    • 1.9.2
    Red HatOpenShift Pipelines
    • < 1.21.1
    • < 1.20.5
    • < 1.20.4
    • 1.21.1
    • 1.20.5
    • 1.20.4
    gogithub.com/tektoncd/pipeline
    • 1.0.0
    • 1.7.0
    • 1.10.0
    • 1.4.0
    • 1.1.0
    • —
    • —
    • —
    • —
    • —

    Vendors and products

    Weakness classes (CWE)

    • CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

      Base

      The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

      Entry at MITRE CWE-22

    References & sources

    • github.comtektoncd/pipeline/security/advisories/GHSA-j5q5-j9gm-2w5cadvisory, x_refsource_CONFIRM
    • github.comtektoncd/pipeline/commit/10fa538f9a2b6d01c75138f1ed7ba3da0e3468…x_refsource_MISC
    • github.comtektoncd/pipeline/commit/318006c4e3a5x_refsource_MISC
    • github.comtektoncd/pipeline/commit/3ca7bc6e6dd1d97f80b84f78370d91edaf023c…x_refsource_MISC
    • github.comtektoncd/pipeline/commit/961388fcf3374bc7656d28ab58ca84987e0a75…x_refsource_MISC
    • github.comtektoncd/pipeline/commit/b1fee65b88aa969069c14c120045e97c37d9ee…x_refsource_MISC
    • github.comtektoncd/pipeline/commit/cdb4e1e97a4f3170f9bc2cbfff83a6c8107bc3…x_refsource_MISC
    • github.comtektoncd/pipeline/commit/ec7755031a183b345cf9e64bea0e0505c1b9cb…x_refsource_MISC
    • access.redhat.comsecurity/cve/CVE-2026-33211Vulnerability database, x_refsource_REDHAT
    • bugzilla.redhat.comRHBZ#2450554Issue tracking, x_refsource_REDHAT
    • security.access.redhat.comdata/csaf/v2/vex/2026/cve-2026-33211.jsonx_sadp-csaf-vex
    • access.redhat.comerrata/RHSA-2026:10155Vendor advisory, x_refsource_REDHAT
    • access.redhat.comerrata/RHSA-2026:10158Vendor advisory, x_refsource_REDHAT
    • access.redhat.comerrata/RHSA-2026:6170Vendor advisory, x_refsource_REDHAT
    • access.redhat.comerrata/RHSA-2026:6166Vendor advisory, x_refsource_REDHAT
    • access.redhat.comerrata/RHSA-2026:24484Vendor advisory, x_refsource_REDHAT
    • access.redhat.comerrata/RHSA-2026:10066Vendor advisory, x_refsource_REDHAT
    • access.redhat.comerrata/RHSA-2026:21932Vendor advisory, x_refsource_REDHAT
    • access.redhat.comerrata/RHSA-2026:21931Vendor advisory, x_refsource_REDHAT
    • access.redhat.comerrata/RHSA-2026:10026Vendor advisory, x_refsource_REDHAT

    Changes to this CVE

    Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

    1. Record modifiedGitHub

      Show 24 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
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      https://github.com/tektoncd/pipeline/commit/10fa538f9a2b6d01c75138f1ed7ba3da0e34687c
      Referenceadded
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      https://github.com/tektoncd/pipeline/commit/318006c4e3a5
      Referenceadded
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      https://github.com/tektoncd/pipeline/commit/3ca7bc6e6dd1d97f80b84f78370d91edaf023cbd
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      https://github.com/tektoncd/pipeline/commit/961388fcf3374bc7656d28ab58ca84987e0a75ae
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      https://github.com/tektoncd/pipeline/commit/b1fee65b88aa969069c14c120045e97c37d9ee5e
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      https://github.com/tektoncd/pipeline/commit/cdb4e1e97a4f3170f9bc2cbfff83a6c8107bc3db
      Referenceadded
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      https://github.com/tektoncd/pipeline/commit/ec7755031a183b345cf9e64bea0e0505c1b9cb78
      Referenceadded
      —
      https://github.com/tektoncd/pipeline/security/advisories/GHSA-j5q5-j9gm-2w5c
      Referenceremoved
      https://github.com/tektoncd/pipeline/commit/10fa538f9a2b6d01c75138f1ed7ba3da0e34687c
      —
      Referenceremoved
      https://github.com/tektoncd/pipeline/commit/318006c4e3a5
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      https://github.com/tektoncd/pipeline/commit/3ca7bc6e6dd1d97f80b84f78370d91edaf023cbd
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      https://github.com/tektoncd/pipeline/commit/961388fcf3374bc7656d28ab58ca84987e0a75ae
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      https://github.com/tektoncd/pipeline/commit/b1fee65b88aa969069c14c120045e97c37d9ee5e
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      https://github.com/tektoncd/pipeline/commit/cdb4e1e97a4f3170f9bc2cbfff83a6c8107bc3db
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      Referenceremoved
      https://github.com/tektoncd/pipeline/commit/ec7755031a183b345cf9e64bea0e0505c1b9cb78
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      Referenceremoved
      https://github.com/tektoncd/pipeline/security/advisories/GHSA-j5q5-j9gm-2w5c
      —
      Reference typeremoved
      https://github.com/tektoncd/pipeline/commit/10fa538f9a2b6d01c75138f1ed7ba3da0e34687c Types: Patch
      —
      Reference typeremoved
      https://github.com/tektoncd/pipeline/commit/318006c4e3a5 Types: Patch
      —
      Reference typeremoved
      https://github.com/tektoncd/pipeline/commit/3ca7bc6e6dd1d97f80b84f78370d91edaf023cbd Types: Patch
      —
      Reference typeremoved
      https://github.com/tektoncd/pipeline/commit/961388fcf3374bc7656d28ab58ca84987e0a75ae Types: Patch
      —
      Reference typeremoved
      https://github.com/tektoncd/pipeline/commit/b1fee65b88aa969069c14c120045e97c37d9ee5e Types: Patch
      —
      Reference typeremoved
      https://github.com/tektoncd/pipeline/commit/cdb4e1e97a4f3170f9bc2cbfff83a6c8107bc3db Types: Patch
      —
      Reference typeremoved
      https://github.com/tektoncd/pipeline/commit/ec7755031a183b345cf9e64bea0e0505c1b9cb78 Types: Patch
      —
      Reference typeremoved
      https://github.com/tektoncd/pipeline/security/advisories/GHSA-j5q5-j9gm-2w5c Types: Patch, Vendor Advisory
      —

      Source identifier: security-advisories@github.com

    2. Record modifiedRed Hat ADP

      Show 27 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)added
      —
      Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/33xxx/CVE-2026-33211.json">CVE-2026-33211</a>
      Referenceadded
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      https://access.redhat.com/errata/RHSA-2026:10026
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      https://access.redhat.com/errata/RHSA-2026:10066
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      https://access.redhat.com/errata/RHSA-2026:10125
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      https://access.redhat.com/errata/RHSA-2026:10155
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      https://access.redhat.com/errata/RHSA-2026:10158
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      https://access.redhat.com/errata/RHSA-2026:21931
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      https://access.redhat.com/errata/RHSA-2026:21932
      Referenceadded
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      https://access.redhat.com/errata/RHSA-2026:24484
      Referenceadded
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      https://access.redhat.com/errata/RHSA-2026:6166
      Referenceadded
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      https://access.redhat.com/errata/RHSA-2026:6170
      Referenceadded
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      https://access.redhat.com/security/cve/CVE-2026-33211
      Referenceadded
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      https://bugzilla.redhat.com/show_bug.cgi?id=2450554
      Referenceadded
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      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33211.json
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:10026
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      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:10066
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      https://access.redhat.com/errata/RHSA-2026:10125
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      https://access.redhat.com/errata/RHSA-2026:10155
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      https://access.redhat.com/errata/RHSA-2026:10158
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      https://access.redhat.com/errata/RHSA-2026:21931
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      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:21932
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      https://access.redhat.com/errata/RHSA-2026:24484
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      https://access.redhat.com/errata/RHSA-2026:6166
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      https://access.redhat.com/errata/RHSA-2026:6170
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      https://access.redhat.com/security/cve/CVE-2026-33211
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      https://bugzilla.redhat.com/show_bug.cgi?id=2450554
      —
      Referenceremoved
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33211.json
      —

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    3. Record modifiedRed Hat ADP

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)changed
      Builds for Red Hat OpenShift 1.6.0, Red Hat OpenShift Builds 1.7.4, Red Hat OpenShift Pipelines 1.2 (+48)
      Red Hat OpenShift Builds 1.6.4, Red Hat OpenShift Builds 1.7.3, Red Hat OpenShift Pipelines 1.2 (+48)

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    4. Record modifiedRed Hat ADP

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)changed
      Builds for Red Hat OpenShift 1.6.0, Red Hat OpenShift Builds 1.7.4, Red Hat OpenShift Pipelines 1.2 (+48)
      Builds for Red Hat OpenShift 1.6.0, Red Hat OpenShift Builds 1.7.3, Red Hat OpenShift Pipelines 1.2 (+48)

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    5. Record modifiedRed Hat ADP

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)changed
      Builds for Red Hat OpenShift 1.6.0, Red Hat OpenShift Builds 1.7.1, Red Hat OpenShift Pipelines 1.2 (+48)
      Builds for Red Hat OpenShift 1.6.0, Red Hat OpenShift Builds 1.7.4, Red Hat OpenShift Pipelines 1.2 (+48)

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    Show 2 older changes

    1. Record modifiedRed Hat ADP

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)changed
      Red Hat OpenShift Builds 1.6.5, Red Hat OpenShift Builds 1.7.4, Red Hat OpenShift Pipelines 1.2 (+48)
      Builds for Red Hat OpenShift 1.6.0, Red Hat OpenShift Builds 1.7.1, Red Hat OpenShift Pipelines 1.2 (+48)

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    2. Record modifiedRed Hat ADP

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)changed
      Red Hat OpenShift Builds 1.6.5, Red Hat OpenShift Builds 1.7.3, Red Hat OpenShift Pipelines 1.21 (+7)
      Red Hat OpenShift Builds 1.6.5, Red Hat OpenShift Builds 1.7.4, Red Hat OpenShift Pipelines 1.21 (+7)

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

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    Badge preview for CVE-2026-33211
    <a href="https://intel.neosec.eu/en/cve/CVE-2026-33211"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-33211.svg?lang=en" alt="CVE-2026-33211 – NEOSEC Intel" height="20"></a>