CVE-2026-29049

Medium

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. Version 0.43.4 contains a patch.

SeverityMedium

CVSS4.3

Exploit probability—

ProductChainguard Melange

PublishedMar 6, 2026

First seenMar 6, 2026

Weakness typeCWE-400Uncontrolled resource consumption CWE-918Server-side request forgery (SSRF)

How to fix

Update

chainguard.dev/melange0.43.4 or later

Affected products

Product	Affected versions	Fixed in
chainguard melange	v ≤ 0.40.5	—
chainguard.dev/melangeGo	v < 0.43.4, No range specified	0.43.4

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