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CVE-2026-28207

Zen C is a systems programming language that compiles to human-readable GNU C/C11. Prior to version 0.4.2, a command injection vulnerability (CWE-78) in the Zen C compiler allows local attackers to execute arbitrary shell commands by providing a specially crafted output filename via the `-o` command-line argument. The vulnerability existed in the `main` application logic (specifically in `src/main.c`), where the compiler constructed a shell command string to invoke the backend C compiler. This c
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0476340b93acfb9f595fd05a61c583047eec6393021bb2b23ea9b3643945076e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"Zen-C","vendor":"z-libs","versions":[{"status":"affected","version":"< 0.4.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7dfcb1e04f28f5dec05e7a02e1d3690d0c00866a7e144141846aca56f1a479c4 · sha256:dec9e594016e56c4… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":6.6,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7dfcb1e04f28f5dec05e7a02e1d3690d0c00866a7e144141846aca56f1a479c4 · sha256:dec9e594016e56c4… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-78","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7dfcb1e04f28f5dec05e7a02e1d3690d0c00866a7e144141846aca56f1a479c4 · sha256:dec9e594016e56c4… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://f0nduesav0yarde.github.io/blog/vulnerabilities/cve-2026-28207/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7dfcb1e04f28f5dec05e7a02e1d3690d0c00866a7e144141846aca56f1a479c4 · sha256:dec9e594016e56c4… · /containers/adp/0/references/0
{"name":"https://github.com/z-libs/Zen-C/security/advisories/GHSA-9rff-x96h-76h2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/z-libs/Zen-C/security/advisories/GHSA-9rff-x96h-76h2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7dfcb1e04f28f5dec05e7a02e1d3690d0c00866a7e144141846aca56f1a479c4 · sha256:dec9e594016e56c4… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/z-libs/Zen-C/security/advisories/GHSA-9rff-x96h-76h2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7dfcb1e04f28f5dec05e7a02e1d3690d0c00866a7e144141846aca56f1a479c4 · sha256:dec9e594016e56c4… · /containers/adp/1/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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