VulnerabilityModified

CVE-2026-29049

melange allows users to build apk packages using declarative pipelines.

MEDIUM 4.3EPSS 0.22%

Does this matter?

Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.

Description

melange allows users to build apk packages using declarative pipelines. In version 0.40.5 and prior, melange update-cache downloads URIs from build configs via io.Copy without any size limit or HTTP client timeout (pkg/renovate/cache/cache.go). An attacker-controlled URI in a melange config can cause unbounded disk writes, exhausting disk on the build runne. Version 0.43.4 contains a patch.

CVSS 3.1: 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
EPSS: 0.22% probability · 13th percentile
CISA KEV: Not listed
Weakness: CWE-400, CWE-918
Affected: chainguard/melange
Source: security-advisories@github.com

References

https://github.com/chainguard-dev/melange/commit/652ca5af08588f78e2d405e64b058fac8398d23f
https://github.com/chainguard-dev/melange/pull/2379
https://github.com/chainguard-dev/melange/releases/tag/v0.43.4
https://github.com/chainguard-dev/melange/security/advisories/GHSA-7rp8-r62p-q6wcVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.