High severity8.2NVD Advisory· Published Feb 4, 2026· Updated Jun 17, 2026
CVE-2026-24843
CVE-2026-24843
Description
melange allows users to build apk packages using declarative pipelines. In version 0.11.3 to before 0.40.3, an attacker who can influence the tar stream from a QEMU guest VM could write files outside the intended workspace directory on the host. The retrieveWorkspace function extracts tar entries without validating that paths stay within the workspace, allowing path traversal via ../ sequences. This issue has been patched in version 0.40.3.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
chainguard.dev/melangeGo | >= 0.11.3, < 0.40.3 | 0.40.3 |
Affected products
8cpe:2.3:a:chainguard:melange:*:*:*:*:*:go:*:*+ 1 more
- cpe:2.3:a:chainguard:melange:*:*:*:*:*:go:*:*range: >=0.11.3,<0.40.5
- (no CPE)range: >= 0.11.3, < 0.40.3
- osv-coords6 versionspkg:apk/chainguard/cgpkg:apk/chainguard/wolfictlpkg:apk/wolfi/wolfictlpkg:golang/chainguard.dev/melangepkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2016.0
< 0.2.201-r0+ 5 more
- (no CPE)range: < 0.2.201-r0
- (no CPE)range: < 0.39.0-r1
- (no CPE)range: < 0.39.0-r1
- (no CPE)range: >= 0.11.3, < 0.40.3
- (no CPE)range: < 0.0.20260205T172317-150000.1.146.1
- (no CPE)range: < 0.0.20260723T184607-160000.1.1
Patches
Vulnerability mechanics
References
4- github.com/chainguard-dev/melange/commit/6e243d0d46699f837d7c392397a694d2bcc7612bnvdPatchWEB
- github.com/chainguard-dev/melange/security/advisories/GHSA-qxx2-7h4c-83f4nvdPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-qxx2-7h4c-83f4ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-24843ghsaADVISORY
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