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.
CVE-2026-29049
MEDIUMPre-NVD 4.34.3
EchelonGraph scoreLOW confidence
This medium-severity CVE scores 4.3 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: cna:github_m
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.3
- EG Score
- 4.3(low)
- EPSS
- 13.3%
- KEV
- Not listed
Published
March 2, 2026
Last Modified
July 7, 2026
Advisory Details (4)
Auto-updated Jul 10, 2026Patch available. Sources: github_release, github, github_commit, github_pr.
github Patch Available
unbounded HTTP download in `melange update-cache` can exhaust disk in CI · Advisory · chainguard-dev/melange · GitHub
https://github.com/chainguard-dev/melange/security/advisories/GHSA-7rp8-r62p-q6wcgithub_release Patch Available
Release v0.43.4
Patch available: chainguard-dev/melange v0.43.4
https://github.com/chainguard-dev/melange/releases/tag/v0.43.4github_pr
Fix melange parsing error line numbers
Fix merged in chainguard-dev/melange PR #2379 on 2026-02-26 — awaiting tagged release
https://github.com/chainguard-dev/melange/pull/2379github_commit
commit 652ca5af0858 (chainguard-dev/melange)
Fix landed in chainguard-dev/melange commit 652ca5af0858 — awaiting tagged release
https://github.com/chainguard-dev/melange/commit/652ca5af08588f78e2d405e64b058fac8398d23fVendor Advisories for CVE-2026-29049(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
Go(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| chainguard.dev/melange | — | 0.43.4 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 6× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-12 05:46 UTCEPSS rescore
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-09 19:10 UTCEPSS rescore
- 2026-07-08 15:15 UTCEPSS rescore
- 2026-07-07 13:46 UTCEPSS rescore
- 2026-07-07 13:38 UTCEG score recompute
Related CVEs(same CWE)
Same CWE
10 shownCWE-400 · CWE-918
- CVE-2013-20004EG 9.8CRITICAL
- CVE-2004-2061EG 9.8EPSS 92%CRITICAL
- CVE-2002-1484EG 9.8EPSS 96%CRITICAL
- CVE-2011-3192NVD 0.0EG 9.0EPSS 100%NONE
- CVE-2004-1464NVD 5.9EG 9.0 KEVEPSS 91%MEDIUM
- CVE-2012-10018EG 8.3HIGH
- CVE-2007-20001EG 7.5HIGH
- CVE-2002-20001EG 7.5EPSS 97%HIGH
- CVE-2012-0785EG 7.5HIGH
- CVE-2012-5366EG 7.5HIGH
Frequently asked(5)
What is CVE-2026-29049?
CVE-2026-29049 is a medium vulnerability published on March 2, 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…
When was CVE-2026-29049 disclosed?
CVE-2026-29049 was first published in the National Vulnerability Database on March 2, 2026, with the most recent update on July 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-29049 actively exploited?
CVE-2026-29049 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-29049?
CVE-2026-29049 has a CVSS v3 base score of 4.3 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-29049?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-29049, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-29049
Is Your Infrastructure Affected by CVE-2026-29049?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.