Incorrect comparison in Jenkins Multibranch Scan Webhook Trigger Plugin
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-208.
Summary
Jenkins Multibranch Scan Webhook Trigger Plugin 1.0.9 and earlier uses a non-constant time comparison function when checking whether the provided and expected webhook token are equal, potentially allowing attackers to use statistical methods to obtain a valid webhook token.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Jenkins | Jenkins Multibranch Scan Webhook Trigger Plugin | up to 1.0.9 | — | No fix listed | CNA |
| — | igalg.jenkins.plugins:multibranch-scan-webhook-trigger (Maven) | up to 1.0.9 | — | No fix listed | GHSA-8859-v9jp-cphf |
- Jenkins Multibranch Scan Webhook Trigger Plugin VendorJenkins Affected up to 1.0.9 Fixed in — No fix listed CNA
- igalg.jenkins.plugins:multibranch-scan-webhook-trigger (Maven) Vendor— Affected up to 1.0.9 Fixed in — No fix listed GHSA-8859-v9jp-cphf
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-46656
- 2026-10-03 Alias added: GHSA-8859-v9jp-cphf
- 2026-10-26 EPSS moved to the 50th–90th percentile
References
Sources
- CVE-2023-46656 · CVE Program
- CVE-2023-46656 · NVD
- FIRST EPSS
- GHSA-8859-v9jp-cphf · GitHub Advisory Database · CC BY 4.0
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