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CVE-2026-70429

medium CVSS 6.5 EPSS 0.4%

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.

Versions it affects

Software versions checked with the free lookup that CVE-2026-70429 applies to, and the release that fixes it where the sources name one.

Jenkins 1.509 fixed in 2.576

At a glance

Severity
Medium
CVSS base score
6.5 out of 10
Known exploited
Not in CISA's catalogue of exploited vulnerabilities
EPSS
0.4% probability of exploitation in the next 30 days, higher than 34% of scored vulnerabilities
Weakness
CWE-178
Published
2026-08-05
NVD CVE.org

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