CVE-2026-29049
March 06, 2026
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.
Affected Packages
https://github.com/chainguard-dev/melange.git (GITHUB):
Affected version(s) >=v0.1.0 <v0.43.4Fix Suggestion:
Update to version v0.43.4github.com/chainguard-dev/melange (GO):
Affected version(s) >=v0.1.0 <v0.43.4Fix Suggestion:
Update to version v0.43.4chainguard.dev/melange (GO):
Affected version(s) >=v0.0.0-20220316102344-1bf7dd66a4e9 <v0.43.4Fix Suggestion:
Update to version v0.43.4Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
EPSS
Base Score:
0.04
