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VulnerabilityPublished

CVE-2026-70429: Jenkins · CWE-178

Affects JenkinsSource CVE Database V5

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Not known to be exploited · CVSS 8.1 High.

Data as of 3 Nov 2026, 22:58 UTC

CVSS 3.1 base score
8.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 36% 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:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
Jenkins ProjectJenkinsAffected–Fixed in–

AI-suggested

Until an official fix is available, restrict the ability to create new users or groups to trusted administrators only to reduce the risk of exploitation.

Description

Jenkins versions 2.575 and earlier, including LTS 2.568.1 and earlier, have an inconsistent handling of case-insensitivity in user and group names. This flaw allows attackers who can create new users or groups with names that case-insensitively match existing ones to impersonate those users or gain their permissions under certain conditions. The vulnerability is identified as CWE-178 and has a high severity with a CVSS score of 8.1.

References

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