CVE-2026-29050: Path traversal in melange's external pipeline resolver (pipeline[].uses) allows loading a pipeline from outside the pipeline directories

Path traversal in melange's external pipeline resolver (pipeline[].uses) allows loading a pipeline from outside the pipeline directories

F-MELANGE-008

Public snapshot: 26 Sep 2026. Status, releases and attribution belong to each source below; none is inferred from another record.

Recorded evidence

6.1medium

CVE-2026-29050CVEchainguard-dev/melange

Path traversal in melange's external pipeline resolver (pipeline[].uses) allows loading a pipeline from outside the pipeline directories

Fixed in: melange v0.43.4

patched

details

Finding IDs: F-MELANGE-008
CVE: CVE-2026-29050
GHSA: GHSA-98f2-w9h9-7fp9
Status: patched
Fixed in: melange v0.43.4
Recorded credit: reporter: @1seal
Note: GHSA-98f2-w9h9-7fp9 · external pipeline resolver path traversal
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
CVE registry state: PUBLISHED
CVE state checked: 23 Sep 2026
Upstream title: Path traversal in melange's external pipeline resolver (pipeline[].uses) allows loading a pipeline from outside the pipeline directories
Upstream CWE: CWE-22
Upstream publication: 23 Apr 2026
Upstream updated: 23 Apr 2026
Metadata fetched: 23 Sep 2026
Upstream @1seal credit: @1seal: reporter (accepted)

F-MELANGE-008: File / path escapes. External pipeline resolution escapes the intended directory. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.

Mechanism source for F-MELANGE-008

Security area (1seal assessment): Authorization. External pipeline resolution escapes the intended directory. Reviewed 24 Sep 2026.

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How this page groups evidence

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