In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the system log viewer does not escape log record metadata (source, level, and timestamp) resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers in control of agent processes.

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Fixes

Solution

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Workaround

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History

Wed, 02 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-79
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Wed, 02 Sep 2026 10:45:00 +0000

Type Values Removed Values Added
Description In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the system log viewer does not escape log record metadata (source, level, and timestamp) resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers in control of agent processes.
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: jenkins

Published:

Updated: 2026-09-02T17:39:13.492Z

Reserved: 2026-09-01T21:55:27.033Z

Link: CVE-2026-84648

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-02T16:17:29.527

Modified: 2026-09-02T18:21:30.560

Link: CVE-2026-84648

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses