CVE-2026-44517
Buildah: Build breakout using malicious Containerfile and Git Smart HTTP server or GitHub release tar archive
- 6.3MediumCVSS base score
- 0.18%Exploitation in 30 daysEPSS · top 92% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Buildah is a tool that facilitates building OCI images. From 1.38.1 until 1.43.2 and 1.44.0, TempDirForURL in define/types.go does not securely confine Git repository subdirectories to the downloaded build context, and downloadToDirectory and stdinToDirectory can follow a Dockerfile symlink left by a partially extracted tar archive. A malicious server supplying a Git repository or tar archive can cause files outside the build context directory to be included in the context or copied into the build. This issue is fixed in versions 1.43.2 and 1.44.0.
Timeline
ID reserved
By GitHub_M
- 4 months later
· 4 months later
Published
- 4 days later
· 4 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium6.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N |
| NVDNVD · Awaiting Analysis | 3.1 | Medium6.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.18% · top 92% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.3.
Affected products
- affected >= 1.38.1, < 1.43.2
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/containers/buildahGHSA-49p4-px3h-rq49 (opens in a new tab)
References
References5
- https://github.com/podman-container-tools/buildah/security/advisories/GHSA-49p4-px3h-rq49 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/podman-container-tools/buildah/commit/54459cf8a0feb4b1da766e4a6360451834e1846c (opens in a new tab)x_refsource_MISC
- https://github.com/podman-container-tools/buildah/commit/fc2003bb2efeb3ed7d5c7e1e88d04e78f370a944 (opens in a new tab)x_refsource_MISC
- https://github.com/podman-container-tools/buildah/releases/tag/v1.43.2 (opens in a new tab)x_refsource_MISC
- https://github.com/podman-container-tools/buildah/releases/tag/v1.44.0 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-64141 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-49p4-px3h-rq49 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-44517)Record last updated .