CVE-2026-29049
melange: unbounded HTTP download in `melange update-cache` can exhaust disk in CI
CVSS Score
4.3
EPSS Score
0.2%
EPSS Percentile
7th
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.
| CWE | CWE-400 CWE-918 |
| Vendor | chainguard-dev |
| Product | melange |
| Published | Mar 6, 2026 |
| Last Updated | Jul 7, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
chainguard-dev / melange
< 0.43.4
References
github.com: https://github.com/chainguard-dev/melange/security/advisories/GHSA-7rp8-r62p-q6wc github.com: https://github.com/chainguard-dev/melange/pull/2379 github.com: https://github.com/chainguard-dev/melange/commit/652ca5af08588f78e2d405e64b058fac8398d23f github.com: https://github.com/chainguard-dev/melange/releases/tag/v0.43.4