Vulnerability-Lookup

GHSA-W22P-4X9F-486V

Vulnerability from github – Published: 2026-04-29 15:30 – Updated: 2026-08-14 19:48

Summary

Jenkins GitHub Plugin has an XSS vulnerability

Details

In Jenkins GitHub Plugin versions 1.46.0 and earlier, the JavaScript that validates the "GitHub hook trigger for GITScm polling" feature improperly processes the current job URL.

This results in a stored cross-site scripting (XSS) vulnerability exploitable by non-anonymous attackers with Overall/Read permission.

GitHub Plugin 1.46.0.1 no longer processes the current job URL as part of JavaScript implementing validation of the feature "GitHub hook trigger for GITScm polling".

Severity

9.0 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.coravy.hudson.plugins.github:github"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.46.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42523"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-06T22:50:26Z",
    "nvd_published_at": "2026-04-29T14:16:19Z",
    "severity": "CRITICAL"
  },
  "details": "In Jenkins GitHub Plugin versions 1.46.0 and earlier, the JavaScript that validates the \"GitHub hook trigger for GITScm polling\" feature improperly processes the current job URL.\n\nThis results in a stored cross-site scripting (XSS) vulnerability exploitable by non-anonymous attackers with Overall/Read permission.\n\nGitHub Plugin 1.46.0.1 no longer processes the current job URL as part of JavaScript implementing validation of the feature \"GitHub hook trigger for GITScm polling\".",
  "id": "GHSA-w22p-4x9f-486v",
  "modified": "2026-08-14T19:48:08Z",
  "published": "2026-04-29T15:30:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42523"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jenkinsci/github-plugin"
    },
    {
      "type": "WEB",
      "url": "https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3704"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Jenkins GitHub Plugin has an XSS vulnerability"
}

CVE-2026-42523 (GCVE-0-2026-42523)

Vulnerability from cvelistv5 – Published: 2026-04-29 13:31 – Updated: 2026-04-29 14:29

Summary

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.

Severity

9 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-29 14:29 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

jenkins mitre root

References

1 reference

URL	Tags
https://www.jenkins.io/security/advisory/2026-04-…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Jenkins Project	Jenkins GitHub Plugin	Affected: 0 , ≤ 1.46.0 (maven)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "CHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-42523",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-29T14:29:18.837762Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-79",
                "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-29T14:29:21.203Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Jenkins GitHub Plugin",
          "vendor": "Jenkins Project",
          "versions": [
            {
              "lessThanOrEqual": "1.46.0",
              "status": "affected",
              "version": "0",
              "versionType": "maven"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-29T13:31:32.189Z",
        "orgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
        "shortName": "jenkins"
      },
      "references": [
        {
          "name": "Jenkins Security Advisory 2026-04-29",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3704"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
    "assignerShortName": "jenkins",
    "cveId": "CVE-2026-42523",
    "datePublished": "2026-04-29T13:31:32.189Z",
    "dateReserved": "2026-04-28T09:24:35.048Z",
    "dateUpdated": "2026-04-29T14:29:21.203Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-W22P-4X9F-486V

CVE-2026-42523 (GCVE-0-2026-42523)

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