GHSA-7rp8-r62p-q6wc: `melange update-cache` has unbounded HTTP download that can exhaust disk in CI
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 runner. Affected versions <= 0.40.5.
Fix: Merged
Acknowledgements
Thank you to Oleh Konko from 1seal for discovering and reporting this issue.
Details
Original advisory: https://github.com/advisories/GHSA-7rp8-r62p-q6wc
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-290490.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-29049 | coverage & exploitation status | NVD · CVE.org |
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