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HIGH

CVE-2026-84648

CVSS v3

8.8

HIGH

EPSS Score

0.6 %

exploit probability, as of 2026-09-28

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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.

Technical details

Published
2026-09-02
Last Modified
2026-09-02

Frequently asked questions

What is CVE-2026-84648?

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.

Is CVE-2026-84648 actively exploited?

Active exploitation of CVE-2026-84648 has not been confirmed. Its EPSS score was 0.6% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-84648?

CVE-2026-84648 has a CVSS v3 base score of 8.8 (HIGH severity).

Is CVE-2026-84648 affecting your environment?

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