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CVE-2026-107589 Jacamar CI CVE debrief

CVE-2026-107589 debrief based on CVE Program and NVD records. This vulnerability affects Jacamar CI, specifically versions prior to v0.30.0, and allows authenticated CI users to generate arbitrary account names, potentially leading to authentication bypass and spoofing. The vulnerability has a CVSS score of 7.5 and is classified as HIGH severity. Defenders responsible for CI environments using Jacamar CI should assess exposure and prioritize verification and remediation efforts. The CVE record and NVD detail page provide official vulnerability metadata.

Vendor
Jacamar CI
Product
Unknown
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-08
Original CVE updated
2026-10-08
Advisory published
2026-10-08
Advisory updated
2026-10-08

Who should care

Defenders responsible for CI environments using Jacamar CI, particularly those with authenticated users, should assess exposure and prioritize verification and remediation efforts.

Why it matters

CVE-2026-107589 allows authenticated CI users to generate arbitrary account names in Jacamar CI prior to v0.30.0, potentially leading to authentication bypass and spoofing. Defenders should prioritize verifying exposure, updating to v0.30.0 or later if necessary, and implementing compensating controls.

  • Potential authentication bypass and spoofing in CI environments
  • Need for verification of Jacamar CI version and exposure
  • Possible impact on CI user account management and security

Technical summary

Insufficient job validation for service accounts in Jacamar CI prior to v0.30.0 allows authenticated CI users to generate arbitrary account names, potentially leading to authentication bypass and spoofing. This vulnerability has significant implications for CI environments, as it could enable attackers to bypass authentication mechanisms and gain unauthorized access. Defenders should prioritize verifying exposure in CI environments using Jacamar CI prior to v0.30.0 and assess the need for updates or compensating controls.

Defensive priority

Defenders should prioritize verifying exposure in CI environments using Jacamar CI prior to v0.30.0 and assess the need for updates or compensating controls.

Recommended defensive actions

  • Verify Jacamar CI version and update to v0.30.0 or later if necessary
  • Assess CI environment exposure and implement compensating controls if updates are not feasible
  • Monitor for suspicious account name generation activity

Evidence notes

The CVE record and NVD detail page provide official vulnerability metadata. The source item from cvelistV5 offers additional context on the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-107589 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-107589

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-107589 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-107589

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Authentication Bypass by Spoofing in Jacamar CI

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/107xxx/CVE-2026-107589.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://ecp-ci.gitlab.io/docs/releasenotes/jacamar/jacamar_0.30.0.html

    Supplemental source

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.