CVE-2026-84652NVD

Vulnerability Summary

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.

Severity Level

HIGH(7.3)

Published Date

Sep 2, 2026

Last Modified

Sep 11, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.44%Probability

Root Weakness (CWE)

CWE-384: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v3.1 Base Metrics — Score 7.3 (HIGH)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

Affected & Patched Versions

Affected Versions

Jenkins Jenkins < 2.568.3
Jenkins Jenkins < 2.580

Patched Versions

Jenkins Jenkins 2.568.3
Jenkins Jenkins 2.580

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