CVE-2026-70429 — HIGH (8.1)

Vulnerability Description

Jenkins 2.575 and earlier, LTS 2.568.1 and earlier handles case-insensitivity in user names and group names inconsistently, allowing attackers able to create new users or groups with names that case-insensitively match other characters to impersonate other users or be granted their permissions in some circumstances.

CVSS Score

8.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-178

References

https://www.jenkins.io/security/advisory/2026-08-05/#SECURITY-3924

FAQ

What is CVE-2026-70429?

CVE-2026-70429 is a vulnerability with a CVSS score of 8.1 (HIGH). Jenkins 2.575 and earlier, LTS 2.568.1 and earlier handles case-insensitivity in user names and group names inconsistently, allowing attackers able to create new users or groups with names that case-i...

How severe is CVE-2026-70429?

CVE-2026-70429 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-70429?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.