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CVE-2026-29049

melange: unbounded HTTP download in `melange update-cache` can exhaust disk in CI

Published: Mar 6, 2026Updated: Jul 7, 2026 Sources: CVE List NVD GHSACWE-400
4.3MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 87.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-400CWE-918

Affected Products

chainguard
oss-project
melangeMixed
DevTools & CI / build-test-tools
chainguard-dev
commercialaka chainguard.dev
melangeMixed
DevTools & CI / build-test-tools
Go
package-ecosystem
chainguard.dev/melange
OSS Libraries

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Command and Control
Impact
Initial Access
View detailed technique mapping

References

https://github.com/chainguard-dev/melange/commit/652ca5af08588f78e2d405e64b058fac8398d23f
github.com
https://github.com/chainguard-dev/melange/pull/2379
github.com
https://github.com/chainguard-dev/melange/releases/tag/v0.43.4
github.com
and 3 more references View all →

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