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No exploitation reportedFix available

CVE-2026-42523

No exploitation reported by the sources we read.

  • Published2026-04-29
  • Fixed in1.46.0.1
  • WeaknessCWE-79

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Jenkins GitHub Plugin 1.46.0 and earlier improperly processes the current job URL as part of JavaScript implementing validation of the feature "GitHub hook trigger for GITScm polling", resulting in a stored cross-site scripting (XSS) vulnerability exploitable by non-anonymous attackers with Overall/Read permission.

Timeline

dates in UTC
  1. 2026-04-2914:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-04 03:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-42523?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-42523?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Jenkins github
BranchAffectedFixed in
1.46< 1.46.0.11.46.0.1

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As jenkins, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Jenkins Project Jenkins GitHub Pluginother versions: not affected
    Affected
    • ≤ 1.46.0no fix statedmaven

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-04-29

Fix

  1. Update Jenkins github to 1.46.0.1

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Published
2026-04-29
Last Modified
2026-10-26
NVD status
Analyzed
GitHub Advisory
GHSA-w22p-4x9f-486v

Frequently asked questions

What is CVE-2026-42523?

Jenkins GitHub Plugin 1.46.0 and earlier improperly processes the current job URL as part of JavaScript implementing validation of the feature "GitHub hook trigger for GITScm polling", resulting in a stored cross-site scripting (XSS) vulnerability exploitable by non-anonymous attackers with Overall/Read permission.

Is CVE-2026-42523 actively exploited?

Active exploitation of CVE-2026-42523 has not been confirmed. Its EPSS score was 0.3% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-42523?

CVE-2026-42523 has a CVSS v3 base score of 9 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

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