What’s Vulnerable › Vulnerabilities
CVE-2026-84652
- Severity: high (CVSS 7.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-02 · updated 2026-09-11
- Weakness: CWE-384
Description
In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate the session when a user is authenticated via the "remember me" cookie, allowing attackers able to serve content on the same site as Jenkins to set a known session cookie in the victim's browser, which after the victim authenticates via the "remember me" cookie, grants the attacker access to Jenkins as that user.
Affected products
- Jenkins: before 2.568.3; before 2.580 — fixed in 2.568.3, 2.580
How to fix
Upgrade to a fixed version: Jenkins 2.568.3, 2.580. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-84652 or the next vulnerability affects your stack