Vulnerability-Lookup

GHSA-2W4F-9FGG-Q2V9

Vulnerability from github – Published: 2026-02-04 00:09 – Updated: 2026-02-04 21:56

Summary

melange has a path traversal in license-path which allows reading files outside workspace

Details

An attacker who can influence a melange configuration file (e.g., through pull request-driven CI or build-as-a-service scenarios) could read arbitrary files from the host system. The LicensingInfos function in pkg/config/config.go reads license files specified in copyright[].license-path without validating that paths remain within the workspace directory, allowing path traversal via ../ sequences. The contents of the traversed file are embedded into the generated SBOM as license text, enabling exfiltration of sensitive data through build artifacts.

Fix: Merged in commit 2f95c9f4

Acknowledgements

melange thanks Oleh Konko (@1seal) from 1seal for discovering and reporting this issue.

Severity ?

5.5 (Medium)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "chainguard.dev/melange"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.14.0"
            },
            {
              "fixed": "0.40.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-25145"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-04T00:09:57Z",
    "nvd_published_at": "2026-02-04T20:16:06Z",
    "severity": "MODERATE"
  },
  "details": "An attacker who can influence a melange configuration file (e.g., through pull request-driven CI or build-as-a-service scenarios) could read arbitrary files from the host system. The `LicensingInfos` function in `pkg/config/config.go` reads license files specified in `copyright[].license-path` without validating that paths remain within the workspace directory, allowing path traversal via `../` sequences. The contents of the traversed file are embedded into the generated SBOM as license text, enabling exfiltration of sensitive data through build artifacts.                                                                                                                                                                      \n                                                                                                                                                                                        \n  Fix: Merged in commit 2f95c9f4\n                                                                                                                                                                                        \n  Acknowledgements                                                                                                                                                                      \n                                                                                                                                                                                        \nmelange thanks Oleh Konko (@1seal) from 1seal for discovering and reporting this issue.",
  "id": "GHSA-2w4f-9fgg-q2v9",
  "modified": "2026-02-04T21:56:16Z",
  "published": "2026-02-04T00:09:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/chainguard-dev/melange/security/advisories/GHSA-2w4f-9fgg-q2v9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25145"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chainguard-dev/melange/commit/2f95c9f4355ed993f2670bf1bb82d88b0f65e9e4"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/chainguard-dev/melange"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "melange has a path traversal in license-path which allows reading files outside workspace "
}

CVE-2026-25145 (GCVE-0-2026-25145)

Vulnerability from cvelistv5 – Published: 2026-02-04 19:32 – Updated: 2026-02-05 14:32

Title

melange has a path traversal in license-path which allows reading files outside workspace

Summary

melange allows users to build apk packages using declarative pipelines. From version 0.14.0 to before 0.40.3, an attacker who can influence a melange configuration file (e.g., through pull request-driven CI or build-as-a-service scenarios) could read arbitrary files from the host system. The LicensingInfos function in pkg/config/config.go reads license files specified in copyright[].license-path without validating that paths remain within the workspace directory, allowing path traversal via ../ sequences. The contents of the traversed file are embedded into the generated SBOM as license text, enabling exfiltration of sensitive data through build artifacts. This issue has been patched in version 0.40.3.

Severity ?

5.5 (Medium)


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

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/chainguard-dev/melange/securit…	x_refsource_CONFIRM
	https://github.com/chainguard-dev/melange/commit/…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	chainguard-dev	melange	Affected: >= 0.14.0, < 0.40.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-25145",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-05T14:20:16.275847Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-05T14:32:56.438Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "melange",
          "vendor": "chainguard-dev",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.14.0, \u003c 0.40.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "melange allows users to build apk packages using declarative pipelines. From version 0.14.0 to before 0.40.3, an attacker who can influence a melange configuration file (e.g., through pull request-driven CI or build-as-a-service scenarios) could read arbitrary files from the host system. The LicensingInfos function in pkg/config/config.go reads license files specified in copyright[].license-path without validating that paths remain within the workspace directory, allowing path traversal via ../ sequences. The contents of the traversed file are embedded into the generated SBOM as license text, enabling exfiltration of sensitive data through build artifacts. This issue has been patched in version 0.40.3."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-04T19:32:35.907Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/chainguard-dev/melange/security/advisories/GHSA-2w4f-9fgg-q2v9",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/chainguard-dev/melange/security/advisories/GHSA-2w4f-9fgg-q2v9"
        },
        {
          "name": "https://github.com/chainguard-dev/melange/commit/2f95c9f4355ed993f2670bf1bb82d88b0f65e9e4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/chainguard-dev/melange/commit/2f95c9f4355ed993f2670bf1bb82d88b0f65e9e4"
        }
      ],
      "source": {
        "advisory": "GHSA-2w4f-9fgg-q2v9",
        "discovery": "UNKNOWN"
      },
      "title": "melange has a path traversal in license-path which allows reading files outside workspace"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-25145",
    "datePublished": "2026-02-04T19:32:35.907Z",
    "dateReserved": "2026-01-29T15:39:11.821Z",
    "dateUpdated": "2026-02-05T14:32:56.438Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-2W4F-9FGG-Q2V9

CVE-2026-25145 (GCVE-0-2026-25145)

Tags

Sightings

Nomenclature