Vulnerability-Lookup

GHSA-QJQ3-WQJ5-G37Q

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-07-01 19:26

Summary

Jenkins Pipeline: Groovy Libraries Plugin does not prohibit symbolic links in shared libraries

Details

Jenkins Pipeline: Groovy Libraries Plugin 797.v90ea_a_9b_e45a_0 and earlier does not prohibit symbolic links in shared libraries.

This allows attackers able to control the content of a library used by a Pipeline job to read arbitrary files on the Jenkins controller filesystem.

Pipeline: Groovy Libraries Plugin 798.v5cc688825312 prohibits symbolic links in shared libraries.

Severity

7.5 (High)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.jenkins.plugins:pipeline-groovy-lib"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "798.v5cc688825312"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-48921"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-01T19:26:57Z",
    "nvd_published_at": "2026-05-27T15:16:31Z",
    "severity": "HIGH"
  },
  "details": "Jenkins Pipeline: Groovy Libraries Plugin 797.v90ea_a_9b_e45a_0 and earlier does not prohibit symbolic links in shared libraries.\n\nThis allows attackers able to control the content of a library used by a Pipeline job to read arbitrary files on the Jenkins controller filesystem.\n\nPipeline: Groovy Libraries Plugin 798.v5cc688825312 prohibits symbolic links in shared libraries.",
  "id": "GHSA-qjq3-wqj5-g37q",
  "modified": "2026-07-01T19:26:57Z",
  "published": "2026-05-27T15:33:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48921"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jenkinsci/pipeline-groovy-lib-plugin"
    },
    {
      "type": "WEB",
      "url": "https://www.jenkins.io/security/advisory/2026-05-27/#SECURITY-3727"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Jenkins Pipeline: Groovy Libraries Plugin does not prohibit symbolic links in shared libraries"
}

CVE-2026-48921 (GCVE-0-2026-48921)

Vulnerability from cvelistv5 – Published: 2026-05-27 14:13 – Updated: 2026-05-27 18:35

Summary

Jenkins Pipeline: Groovy Libraries Plugin 797.v90ea_a_9b_e45a_0 and earlier does not prohibit symbolic links in shared libraries, allowing attackers able to control the content of a library used by a Pipeline job to read arbitrary files on the Jenkins controller filesystem.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-27 15:38 UTC

CWE

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Assigner

jenkins CNA under the mitre root

CNA scorecard E 44/100 over 132 records in the last 180 days details

References

1 reference

URL	Tags
https://www.jenkins.io/security/advisory/2026-05-…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Jenkins Project	Jenkins Pipeline: Groovy Libraries Plugin	Affected: 0 , ≤ 797.v90ea_a_9b_e45a_0 (maven)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-48921",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-27T15:38:58.994406Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-59",
                "description": "CWE-59 Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-27T18:35:27.630Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Jenkins Pipeline: Groovy Libraries Plugin",
          "vendor": "Jenkins Project",
          "versions": [
            {
              "lessThanOrEqual": "797.v90ea_a_9b_e45a_0",
              "status": "affected",
              "version": "0",
              "versionType": "maven"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Jenkins Pipeline: Groovy Libraries Plugin 797.v90ea_a_9b_e45a_0 and earlier does not prohibit symbolic links in shared libraries, allowing attackers able to control the content of a library used by a Pipeline job to read arbitrary files on the Jenkins controller filesystem."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T14:13:49.193Z",
        "orgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
        "shortName": "jenkins"
      },
      "references": [
        {
          "name": "Jenkins Security Advisory 2026-05-27",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.jenkins.io/security/advisory/2026-05-27/#SECURITY-3727"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
    "assignerShortName": "jenkins",
    "cveId": "CVE-2026-48921",
    "datePublished": "2026-05-27T14:13:49.193Z",
    "dateReserved": "2026-05-26T14:50:46.813Z",
    "dateUpdated": "2026-05-27T18:35:27.630Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-QJQ3-WQJ5-G37Q

CVE-2026-48921 (GCVE-0-2026-48921)

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