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.
History

Tue, 10 Mar 2026 19:30:00 +0000

Type Values Removed Values Added
First Time appeared Chainguard
Chainguard melange
CPEs cpe:2.3:a:chainguard:melange:*:*:*:*:*:go:*:*
Vendors & Products Chainguard
Chainguard melange

Mon, 09 Mar 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 06 Mar 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Chainguard-dev
Chainguard-dev melange
Vendors & Products Chainguard-dev
Chainguard-dev melange

Fri, 06 Mar 2026 07:15:00 +0000

Type Values Removed Values Added
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.
Title melange: unbounded HTTP download in `melange update-cache` can exhaust disk in CI
Weaknesses CWE-400
CWE-918
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-03-06T07:03:10.361Z

Updated: 2026-03-09T20:00:19.899Z

Reserved: 2026-03-03T17:50:11.243Z

Link: CVE-2026-29049

cve-icon Vulnrichment

Updated: 2026-03-09T20:00:14.380Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-06T07:16:02.093

Modified: 2026-03-10T19:28:57.330

Link: CVE-2026-29049

cve-icon Redhat

No data.