Medium 4.3Published Mar 6, 2026

CVE-2026-29049melange allows users to build apk packages using declarative pipelines.

Updated under an hour ago (2026-10-19 07:00 UTC)

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It affects chainguard melange. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for chainguard melange

Exploited in the last 30 days

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: 4.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-400, CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jul 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

chainguard melange chainguard:melange	through 0.40.5	NVD

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.