CVSS 3.1
4.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LCVE-2026-29049
Medium (4.3) in chainguard melange. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in chainguard.dev/melange 0.43.4.
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.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-400, CWE-918
- Published
- Modified
- Record from
- the NVD, synced
Affected
- chainguard:melange
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-7rp8-r62p-q6wc | Go | chainguard.dev/melange | <0.43.4 | 0.43.4 |
| GO-2026-4588 | Go | chainguard.dev/melange | all versions | no fix published |