{"id":"CVE-2026-44218","aliases":["GHSA-jrm4-4pcf-4763","PYSEC-2026-2409"],"title":"ciguard: Container image runs as root (no USER directive)","summary":"ciguard: Container image runs as root (no USER directive)","severity":"low","cvss":3,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","vendor":"ciguard","product":"ciguard","ecosystem":"pip","affected":["ciguard >= 0.1.0, < 0.8.2"],"patched":["ciguard 0.8.2"],"published":"2026-05-05","updated":"2026-07-13","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-jrm4-4pcf-4763","references":[{"url":"https://github.com/Jo-Jo98/ciguard/security/advisories/GHSA-jrm4-4pcf-4763"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44218"},{"url":"https://github.com/Jo-Jo98/ciguard"},{"url":"https://github.com/Jo-Jo98/ciguard/releases/tag/v0.8.2"},{"url":"https://github.com/Jo-Jo98/ciguard/releases/tag/v0.8.3"}],"tags":["osv","pip"],"epss":0.00117,"epssPercentile":0.01499,"ingestedAt":"2026-07-13T18:58:00.079Z","slug":"CVE-2026-44218","body":"## Overview\n\n## Summary\n\nThe published `ghcr.io/jo-jo98/ciguard` container image inherits the default root user because the `Dockerfile` lacks a `USER` directive. ciguard is a static analyser with no need for root privileges; running as root inside a container makes any future container-runtime escape CVE more impactful than it needs to be.\n\n## Threat scenario\n\nDefence-in-depth gap. Without a known container-runtime CVE in the chain, this finding is not directly exploitable. Recent runc CVEs (e.g. CVE-2024-21626) provided escape primitives that depended on host UID = container UID = 0 for full impact; with this fix, any future such escape primitive lands as a non-root user on the host.\n\n## Patch\n\n- Dockerfile adds `RUN groupadd -r ciguard && useradd -r -g ciguard -d /home/ciguard -m -s /usr/sbin/nologin ciguard && chown -R ciguard:ciguard /reports /policies-mount /app`.\n- Followed by `USER ciguard` before the `CMD` directive.\n- Trivy DS-0002 misconfig clears (`Tests: 20 SUCCESSES: 20 FAILURES: 0`).\n\n## Discovery\n\nFound by Trivy filesystem scan during ciguard's first self-conducted pentest cycle, 2026-04-26.\n\n## CVSS Scoring\n\n- CVSS v3.1: `CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N` — 2.0 (Low)\n- CVSS v4.0: `CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N` — 3.4 (Low) per Cycle 1 report; GitHub's calc 1.8 (Low). Both Low.\n\n## Verification\n\n```\n$ docker run --rm ghcr.io/jo-jo98/ciguard:v0.8.2 id\nuid=999(ciguard) gid=999(ciguard) groups=999(ciguard)\n```\n\n## References\n\n- Fix released in [v0.8.2](https://github.com/Jo-Jo98/ciguard/releases/tag/v0.8.2)\n- CI regression gate added in [v0.8.3](https://github.com/Jo-Jo98/ciguard/releases/tag/v0.8.3)\n- https://www.cve.org/CVERecord?id=CVE-2026-44218\n\n## Affected packages\n\n- `ciguard >= 0.1.0, < 0.8.2`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `ciguard 0.8.2`","depth":"sunlit","depthScore":17,"depthScoreParts":{"impact":16.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}