CVE-2026-29049 json
melange: unbounded HTTP download in `melange update-cache` can exhaust disk in CI
published 2026-03-02 8 mo ago modified 2026-09-10 1 mo ago also EUVD-2026-10015 , GHSA-7rp8-r62p-q6wc , GO-2026-4588
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 18%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go chainguard.dev/melange 0.43.4
- chainguard melange 0.43.4
- govulncheck-vulndb openSUSE Leap 15.6 0.0.20260317T205859-150000.1.152.1
suse advisories SUSE-SU-2026:1042-1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8 mo ago
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | chainguard.dev/melange | <0.43.4 all versions |
0.43.4 |
Affected products
- chainguard-dev melange
Classification
References
-
github.com
/chainguard-dev/melange/pull/2379
web
-
github.com
/chainguard-dev/melange/commit/652ca5af08588f78e2d405e64b058fac8398d23f
web
-
github.com
/chainguard-dev/melange/security/advisories/GHSA-7rp8-r62p-q6wc
web, vendor-advisory, advisory
-
github.com
/chainguard-dev/melange/releases/tag/v0.43.4
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-29049
advisory
-
github.com
/chainguard-dev/melange
package
Sources
- CVE List CVE-2026-29049
- GitHub Advisory GHSA-7rp8-r62p-q6wc
- NVD CVE-2026-29049
- OSV GO-2026-4588
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.