CVE-2026-70429: Jenkins 2.575 and earlier, LTS 2.568.1 and earlier handles case-insensitivity in user names and group names in

Q: How do I fix CVE-2026-70429?

jenkins: upgrade to 2.568.2, 2.576. Exact commands for each OS are on this page.

Q: Is CVE-2026-70429 being exploited?

CVE-2026-70429 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-70429 affect?

CVE-2026-70429 affects jenkins. Severity is medium (CVSS 6.5). 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 i

Q: How urgent is CVE-2026-70429?

Priority 32/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2026-70429 is a medium-severity flaw (CVSS 6.5) affecting jenkins. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-178
Published	2026-08-05
Last modified	2026-10-23

Publisher (CNA): Jenkins Project · Vendor: jenkins

Am I affected?

Timeline

2026-08-05 18:17 UTCPublished CVE record published
2026-10-23 21:10 UTCUpdated Record last modified

jenkins jenkins UPGRADE

Affected: < 2.568.2 · < 2.576

Fixed in: 2.568.2, 2.576

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy jenkins || rpm -q jenkins || jenkins --version

2. UPGRADE to 2.568.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade jenkins

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jenkins

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-70429?

jenkins: upgrade to 2.568.2, 2.576. Exact commands for each OS are on this page.

Is CVE-2026-70429 being exploited?

CVE-2026-70429 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-70429 affect?

CVE-2026-70429 affects jenkins. Severity is medium (CVSS 6.5). 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 i

How urgent is CVE-2026-70429?

Priority 32/100. No elevated risk signals yet.

Related CVEs

CVE-2026-70430 LOW 2.7 UPGRADE Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not restrict the types of objects that can be instanti

References

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