HighCVE-2026-12795

    BerriAI litellm SSO Debug Flow ui_sso.py json.dumps missing authentication (CVE-2026-12795)

    Published Last modified Sources: CVE.org, OSV

    What is affected, what to do

    A vulnerability was determined in BerriAI litellm up to 1.82.2. This affects the function json.dumps of the file litellm/proxy/management_endpoints/ui_sso.py of the component SSO Debug Flow.

    An exploit is publicly available. The available sources name no fixed version. Check the vendor guidance in the references below.

    Affected
    • BerriAI LiteLLM eq 1.82.0..1.82.0
    • BerriAI LiteLLM eq 1.82.1..1.82.1
    • BerriAI LiteLLM eq 1.82.2..1.82.2

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

    Metrics

    7.3

    Priority

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

    Source: NVD, CVSS v3

    7.3

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: CVE.org, OSV

    0.8 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 56.4

    Show all metrics
    Severity
    High
    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
    81.10 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
    PoC (publicly reported)
    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
    7.3 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
    7.3
    CVSS v4

    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
    5.5
    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
    0.8 %
    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
    56.4
    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
    CISA assessment (SSVC)
    Exploitation: proof of concept · automatable · Technical impact: partial
    Source: CISA Vulnrichment, as of 23 June 2026
    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-287, CWE-306

    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 vulnerability was determined in BerriAI litellm up to 1.82.2. This affects the function json.dumps of the file litellm/proxy/management_endpoints/ui_sso.py of the component SSO Debug Flow. Executing a manipulation can lead to missing authentication. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.

    Source: NVD (NIST), OSV (Open Source Vulnerabilities), CVE.org (MITRE), cvelistv5

    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
    BerriAIlitellm
    • 1.82.0
    • 1.82.2
    • 1.82.1
    • —
    • —
    • —
    litellmlitellm
    • ≤ 1.82.2
    • —
    pypilitellm
    • 1.61.19
    • 0.1.370
    • 1.7.1
    • 0.1.551
    • 0.1.380
    • 0.1.341
    • 1.72.3
    • 0.1.702
    • 1.65.4.post1
    • 1.53.3
    • 0.1.210
    • 1.14.3
    • 0.13.2
    • 0.1.222
    • 0.1.720
    • 0.1.205
    • 1.74.14
    • 0.6.2
    • 0.1.593
    • 0.1.553
    • 0.13.1.dev3
    • 1.81.11
    • 0.7.1.dev2
    • 1.61.16
    • 1.73.1
    • 0.1.758
    • 1.73.0
    • 1.61.20
    • 0.1.509
    • 0.1.819
    • 0.1.700.dev2
    • 1.62.4
    • 1.60.8
    • 0.8.0
    • 1.7.7
    • 0.1.648
    • 0.1.401
    • 1.9.5
    • 0.1.714
    • 1.79.0.dev2
    • 1.60.9
    • 0.13.6.dev1
    • 0.1.818
    • 0.14.0
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    Vendors and products

    Weakness classes (CWE)

    • CWE-287Improper Authentication

      Class

      When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

      Entry at MITRE CWE-287

    • CWE-306Missing Authentication for Critical Function

      Base

      The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

      Entry at MITRE CWE-306

    Public exploit references

    Publicly reported proof-of-concepts, exploit modules and detection templates for this vulnerability. NEOSEC links to the original sources only and does not provide any exploit code.

    Public exploit references
    Reference tagged as exploitgist.github.com (opens in a new tab)PoC (publicly reported)reported, not verified—

    References & sources

    • vuldb.comVDB-372557 | BerriAI litellm SSO Debug Flow ui_sso.py json.dumps missing authenticationVulnerability database, Technical description, Third-party advisory, Vulnerability database
    • vuldb.comVDB-372557 | CTI Indicators (IOB, IOC, IOA)signature, Permissions required, Permissions required, Vulnerability database
    • vuldb.comCVE-2026-12795 | CVE Analysis and ReportThird-party advisory, Third-party advisory, Vulnerability database
    • vuldb.comSubmit #811286 | litellm <= 1.82.2 Missing Authentication for Critical Function (CWE-306)Third-party advisory, Third-party advisory, Exploit, Vulnerability database
    • gist.github.comYLChen-007/9b13c75a3a73187a4082cc6df0b100d3Exploit, Exploit, Third-party advisory
    • NVD (NIST)vuln/detail/CVE-2026-12795advisory
    • github.comBerriAI/litellmpackage
    • pypi.orgproject/litellmpackage
    • GitHub Security Advisoriesadvisories/GHSA-j37q-q7p9-vpwmadvisory

    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. Initial analysis by NVDNVD

      Newly listed as affected:
      Show 6 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Product configurationadded
      —
      OR *cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:* versions up to (including) 1.82.2
      Reference typeadded
      —
      VulDB: https://gist.github.com/YLChen-007/9b13c75a3a73187a4082cc6df0b100d3 Types: Exploit, Third Party Advisory
      Reference typeadded
      —
      VulDB: https://vuldb.com/cve/CVE-2026-12795 Types: Third Party Advisory, VDB Entry
      Reference typeadded
      —
      VulDB: https://vuldb.com/submit/811286 Types: Exploit, Third Party Advisory, VDB Entry
      Reference typeadded
      —
      VulDB: https://vuldb.com/vuln/372557 Types: Third Party Advisory, VDB Entry
      Reference typeadded
      —
      VulDB: https://vuldb.com/vuln/372557/cti Types: Permissions Required, VDB Entry

      Source identifier: nvd@nist.gov

    2. Record modifiedCISA ADP

      CISA assessment (SSVC): exploitation: proof of concept, automatable: yes

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      SSVC assessmentadded
      —
      {"id":"CVE-2026-12795","role":"CISA Coordinator","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"version":"2.0.3","timestamp":"2026-06-23T02:44:53.768634Z"}

      Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

    One NVD translation into another language is hidden.

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