CVE-2026-70429

HIGH

Jenkins < 2.576 and LTS < 2.568.2 - Permission Bypass via Case-Insensitive User and Group Name Collision

Title source: llm

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.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory

Jenkins Security Advisory 2026-08-05

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

Scores

CVSS v3 8.1

EPSS 0.0024

EPSS Percentile 15.4%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-178

Status published

Products (2)

Jenkins Project/Jenkins 2.568.2 - 2.568.*

Jenkins Project/Jenkins 2.576

Published Aug 05, 2026

Tracked Since Aug 05, 2026