6.1

CVE-2026-117621: jenkins

Analyzed
AliasesCGA-q47f-56fc-2888CGA-2vrp-6gjr-38x2CGA-24w5-8jw6-jrq6
Published 28-10-2026Last modified 28-10-2026

Vulnerability summary

CVE-2026-117621 is a medium (CVSS 6.1) vulnerability in jenkins. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 22% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.1, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
0.29%
0%100%
Low · Change unavailable
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 28-10-2026
    PublishedVulnerability first disclosed.

Description

Jenkins 2.587 and earlier, LTS 2.580.1 and earlier computes on the agent the URL of the link shown in the workspace browser for each file and directory, resulting in a cross-site scripting (XSS) vulnerability exploitable by attackers in control of agent processes.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

29-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard3 products
  • jenkins-2.555All versions (No fix recorded)
  • jenkins-2.568All versions (No fix recorded)
  • jenkins-2.580All versions (No fix recorded)
Jenkins1 product

2 vendors · 4 products

References

1 links