1sealsemantic last-mile verification

Research / Finding

QEMU runner could write files outside workspace directory

F-MELANGE-005

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

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Recorded evidence

8.2high
CVE-2026-24843CVEchainguard-dev/melange

QEMU runner could write files outside workspace directory

Fixed in: melange (commit 6e243d0d)

patched
details
Finding IDs
F-MELANGE-005
CVE
CVE-2026-24843
GHSA
GHSA-qxx2-7h4c-83f4
Status
patched
Fixed in
melange (commit 6e243d0d)
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:H
CVE registry state
PUBLISHED
CVE state checked
Upstream title
QEMU runner could write files outside workspace directory
Upstream CWE
CWE-22
Upstream publication
Upstream updated
Metadata fetched
Upstream @1seal credit
@1seal: reporter (accepted)

F-MELANGE-005: File / path escapes. QEMU runner path handling permits an escape. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.

Mechanism source for F-MELANGE-005

Security area (1seal assessment): Authorization. QEMU runner path handling permits an escape. Reviewed 24 Sep 2026.

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How this page groups evidence

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