CVE-2026-70437: Jenkins Webhook Secret Credentials Provider Plugin · Timing Side Channel
Affects Jenkins Webhook Secret Credentials Provider PluginSource CVE Database V5
Not known to be exploited · CVSS 3.7 Low.
Data as of 3 Nov 2026, 22:58 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 19% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 5 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Jenkins ProjectJenkins Webhook Secret Credentials Provider Plugin | Affected
| Fixed in– |
AI-suggested
Until a fix is available, consider restricting access to webhook endpoints and monitoring for unusual webhook activity. Avoid relying solely on this plugin for critical authentication without additional safeguards.
Description
A timing attack vulnerability exists in Jenkins Webhook Secret Credentials Provider Plugin versions 16.v0cfa_f0215cf5 and earlier. The plugin does not use a constant-time comparison function when verifying webhook bearer tokens, which could allow attackers to infer valid tokens through statistical analysis. The vulnerability has a low CVSS score of 3.7 and does not impact integrity or availability.