MediumCVE-2026-106123

    Rabbitmq-java-client: Generation of Error Message Containing Sensitive Information (CVE-2026-106123)

    Published Last modified Sources: BSI, CVE.org, OSV, Hersteller

    What is affected, what to do

    The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.35.0, ConnectionFactoryConfigurator.load() includes the raw uri value in wrapped exceptions when AMQP URI parsing fails.

    An exploit is publicly available. Update Rabbitmq-java-client to version 5.35.0, Com.rabbitmq Amqp-client to version 5.35.0.

    Affected
    • Rabbitmq-java-client lt *..5.35.0
    • Com.rabbitmq Amqp-client lt *..5.35.0
    Fixed in
    • Rabbitmq-java-client 5.35.0
    • Com.rabbitmq Amqp-client 5.35.0

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

    Metrics

    5.7

    Priority

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

    Source: Vendor (CNA), CVSS v4

    5.5

    CVSS v3

    Severity Medium on the scale from 0 to 10.

    Source: BSI, CVE.org, OSV, Hersteller

    0.2 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 15.0

    Show all metrics
    Severity
    Medium
    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
    60.31 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
    5.7 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
    5.5
    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
    5.7
    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
    0.2 %
    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
    15.0
    Elevated — this CVE ranks above at least 10% of all CVEs scored today.
    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: none known · not automatable · Technical impact: partial
    Source: CISA Vulnrichment, as of 6 October 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-209

    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
    Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
    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

    The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.35.0, ConnectionFactoryConfigurator.load() includes the raw uri value in wrapped exceptions when AMQP URI parsing fails. Because the URI may contain a plaintext username and password, startup logs, application performance monitoring systems, CI logs, and copied stack traces can disclose broker credentials to users who should not have access to them. This issue is fixed in version 5.35.0.

    Source: BSI CSAF, BSI WID Portal, cvelistv5, OSV (Open Source Vulnerabilities), NVD (NIST), GitHub Security Advisories

    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
    com.rabbitmqamqp-client
    • < 5.35.0
    • 5.35.0
    rabbitmqrabbitmq-java-client
    • < 5.35.0
    • 5.35.0
    vmwarerabbitmq_java_client
    • < 5.35.0
    • 5.35.0
    Open SourceRabbitMQ Java Client
    • < 5.37.0
    • 5.37.0
    mavencom.rabbitmq:amqp-client
    • 3.6.6
    • 2.1.1
    • 4.7.0
    • 3.5.5
    • 2.3.0
    • 5.5.3
    • 5.21.0
    • 5.10.0
    • 5.17.1
    • 4.12.0
    • 3.5.1
    • 5.18.0
    • 2.8.6
    • 5.1.0
    • 4.9.1
    • 3.3.0
    • 3.1.1
    • 2.1.0
    • 4.5.0
    • 4.11.2
    • 3.3.4
    • 1.8.1
    • 5.20.0
    • 3.4.1
    • 4.0.2
    • 5.29.0
    • 4.4.2
    • 1.5.5
    • 4.2.0
    • 4.0.1
    • 4.0.0
    • 3.1.0
    • 5.4.2
    • 5.31.0
    • 4.2.2
    • 5.7.3
    • 3.0.3
    • 5.8.0
    • 5.9.0
    • 5.13.0
    • 5.12.0
    • 4.8.2
    • 3.2.2
    • 5.34.0
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    Vendors and products

    Weakness classes (CWE)

    • CWE-209Generation of Error Message Containing Sensitive Information

      Base

      The product generates an error message that includes sensitive information about its environment, users, or associated data.

      Entry at MITRE CWE-209

    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 exploitgithub.com (opens in a new tab)PoC (publicly reported)reported, not verified—

    References & sources

    • github.comrabbitmq/rabbitmq-java-client/security/advisories/GHSA-h6w7-qmc…x_refsource_CONFIRM, Exploit, Vendor advisory, web
    • github.comrabbitmq/rabbitmq-java-client/pull/2052x_refsource_MISC, Issue tracking, Patch, web
    • github.comrabbitmq/rabbitmq-java-client/commit/daca1875cdb8b8c0acce78f711…x_refsource_MISC, Patch, web
    • github.comrabbitmq/rabbitmq-java-client/releases/tag/v5.35.0x_refsource_MISC, Release notes, web
    • NVD (NIST)vuln/detail/CVE-2026-106123advisory
    • github.comrabbitmq/rabbitmq-java-clientpackage

    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

      Weakness type: CWE-209

      Show 2 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Weakness type (CWE)added
      —
      CWE-209
      Weakness type (CWE)removed
      CWE-509
      —

      Source identifier: security-advisories@github.com

    2. Initial analysis by NVDNVD

      Newly listed as affected:

      CVSS V3.1: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

      Show 6 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      CVSSadded
      —
      AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
      Product configurationadded
      —
      OR *cpe:2.3:a:vmware:rabbitmq_java_client:*:*:*:*:*:*:*:* versions up to (excluding) 5.35.0
      Reference typeadded
      —
      GitHub, Inc.: https://github.com/rabbitmq/rabbitmq-java-client/commit/daca1875cdb8b8c0acce78f71103b21a05478446 Types: Patch
      Reference typeadded
      —
      GitHub, Inc.: https://github.com/rabbitmq/rabbitmq-java-client/pull/2052 Types: Issue Tracking, Patch
      Reference typeadded
      —
      GitHub, Inc.: https://github.com/rabbitmq/rabbitmq-java-client/releases/tag/v5.35.0 Types: Release Notes
      Reference typeadded
      —
      GitHub, Inc.: https://github.com/rabbitmq/rabbitmq-java-client/security/advisories/GHSA-h6w7-qmcm-q6xr Types: Exploit, Vendor Advisory

      Source identifier: nvd@nist.gov

    3. Record modifiedCISA ADP

      CISA assessment (SSVC): exploitation: none known, automatable: no

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      SSVC assessmentadded
      —
      {"id":"CVE-2026-106123","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"version":"2.0.3","timestamp":"2026-10-06T19:25:53.529176Z"}

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

    4. ReceivedGitHub

      CVSS V4.0: AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

      Weakness type: CWE-509

      Description added or changed

      Show 8 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Descriptionadded
      —
      The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.35.0, ConnectionFactoryConfigurator.load() includes the raw uri value in wrapped exceptions when AMQP URI parsing fails. Because the URI may contain a plaintext username and password, startup logs, application performance monitoring systems, CI logs, and copied stack traces can disclose broker credentials to users who should not have access to them. This issue is fixed in version 5.35.0.
      CVSSadded
      —
      AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
      Weakness type (CWE)added
      —
      CWE-509
      Affected versions (publisher)added
      —
      New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/106xxx/CVE-2026-106123.json">CVE-2026-106123</a>
      Referenceadded
      —
      https://github.com/rabbitmq/rabbitmq-java-client/commit/daca1875cdb8b8c0acce78f71103b21a05478446
      Referenceadded
      —
      https://github.com/rabbitmq/rabbitmq-java-client/pull/2052
      Referenceadded
      —
      https://github.com/rabbitmq/rabbitmq-java-client/releases/tag/v5.35.0
      Referenceadded
      —
      https://github.com/rabbitmq/rabbitmq-java-client/security/advisories/GHSA-h6w7-qmcm-q6xr

      Source identifier: security-advisories@github.com

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