How serious is CVE-2026-29049?

This vulnerability has a CVSS score of 4.3 out of 10, classified as MEDIUM severity. No public exploit code has been identified yet.

Which products are affected by CVE-2026-29049?

CVE-2026-29049 affects chainguard melange. Check the full CVE details for specific version information.

How do I fix CVE-2026-29049?

To remediate CVE-2026-29049, check for security patches from chainguard. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2026-29049

Medium

|4.3

No Exploit

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows an attacker to make a build process download files from a specified location without any limits, potentially filling up the disk space on the server running the build. To exploit this, the attacker needs to control the URI in the build configuration, and there is currently no fix available.

Technical 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.

CVSS Vector Analysis

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

Confidentiality ImpactNone

Integrity ImpactNone

Availability ImpactLow

ScopeUnchanged

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$552($500-$1K)

Vendor Response

Grade APatched in 4 days

Quick Information

Published

Mar 6, 2026

about 1 month ago

Last Modified

Mar 10, 2026

28 days ago

Vendor

chainguard

Product

melange