CVE-2026-24843

melange allows users to build apk packages using declarative pipelines. In version 0.11.3 to before 0.40.3, an attacker who can influence the tar stream from a QEMU guest VM could write files outside the intended workspace directory on the host. The retrieveWorkspace function extracts tar entries without validating that paths stay within the workspace, allowing path traversal via ../ sequences. This issue has been patched in version 0.40.3.

CVSS v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.8

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/chainguard-dev/melange/commit/6e243d0d46699f837d7c392397a694d2bcc7612b	Patch
https://github.com/chainguard-dev/melange/security/advisories/GHSA-qxx2-7h4c-83f4	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:chainguard:melange:*:*:*:*:*:go:*:*

History

No history.

Information

Published : 2026-02-04 20:16

Updated : 2026-02-18 15:57

NVD link : CVE-2026-24843

Mitre link : CVE-2026-24843

CVE.ORG link : CVE-2026-24843

JSON object : View

Products Affected

chainguard

melange

CWE

CWE-22

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

{"id": "CVE-2026-24843", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 5.8, "exploitabilityScore": 1.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.4, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 5.8, "exploitabilityScore": 2.0}]}, "published": "2026-02-04T20:16:05.393", "references": [{"url": "https://github.com/chainguard-dev/melange/commit/6e243d0d46699f837d7c392397a694d2bcc7612b", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/chainguard-dev/melange/security/advisories/GHSA-qxx2-7h4c-83f4", "tags": ["Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "melange allows users to build apk packages using declarative pipelines. In version 0.11.3 to before 0.40.3, an attacker who can influence the tar stream from a QEMU guest VM could write files outside the intended workspace directory on the host. The retrieveWorkspace function extracts tar entries without validating that paths stay within the workspace, allowing path traversal via ../ sequences. This issue has been patched in version 0.40.3."}, {"lang": "es", "value": "melange permite a los usuarios construir paquetes apk utilizando pipelines declarativos. En las versiones 0.11.3 hasta antes de la 0.40.3, un atacante que puede influir en el flujo tar desde una VM invitada de QEMU podr\u00eda escribir archivos fuera del directorio de espacio de trabajo previsto en el host. La funci\u00f3n retrieveWorkspace extrae entradas tar sin validar que las rutas permanezcan dentro del espacio de trabajo, permitiendo el salto de ruta a trav\u00e9s de secuencias ../. Este problema ha sido parcheado en la versi\u00f3n 0.40.3."}], "lastModified": "2026-02-18T15:57:38.797", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:chainguard:melange:*:*:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "56496C74-AC93-4A3A-AF6B-DCA473D83792", "versionEndExcluding": "0.40.5", "versionStartIncluding": "0.11.3"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}