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. There is no known patch publicly available.
Scores
CVSS v3
4.3
EPSS
0.0004
EPSS Percentile
12.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-918
CWE-400
Status
published
Products (2)
chainguard/melange
< 0.40.5
chainguard.dev/melange
0Go
Published
Mar 06, 2026
Tracked Since
Mar 06, 2026