{"id":"CVE-2026-62676","state":"PUBLISHED","title":"Omnigent Guardrail policy bypass: shell-command parser fails open in policies/builtins/_shell.py","description":"Omnigent is an open-source AI agent framework and meta-harness for orchestrating coding agents. Prior to 0.3.0, the shared shell-command parser in omnigent/policies/builtins/_shell.py fails to recognize combined interpreter flags, the timeout, nice, setsid, and stdbuf wrappers, command substitutions, and a single background control operator. A gated git push or gh write hidden with these forms produces no parsed operation, causing the github.py write_repos and write_branches allowlist and the working_dir.py workspace confinement policies to abstain and allow the command. An authenticated or prompt-injected agent can therefore push to an unauthorized repository or branch or escape the intended workspace. This issue is fixed in version 0.3.0.","publishedAt":"2026-08-21T17:42:21.563Z","updatedAt":"2026-08-26T17:32:00.761Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["omnigent-ai omnigent"],"affected":[{"vendor":"omnigent-ai","product":"omnigent","versions":[{"version":"< 0.3.0","status":"affected"}]}],"references":["https://github.com/omnigent-ai/omnigent/security/advisories/GHSA-7mqg-cx4g-x2rf","https://github.com/omnigent-ai/omnigent/pull/389","https://github.com/omnigent-ai/omnigent/commit/1a05b7b139ef504bf2be89bf37918abe104fb95c","https://github.com/omnigent-ai/omnigent/releases/tag/v0.3.0"],"weaknesses":["CWE-184"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/62xxx/CVE-2026-62676.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-62676","state":"PUBLISHED","datePublished":"2026-08-21T17:42:21.563Z","dateUpdated":"2026-08-26T17:32:00.761Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-14T20:22:04.395Z"},"containers":{"cna":{"title":"Omnigent Guardrail policy bypass: shell-command parser fails open in policies/builtins/_shell.py","descriptions":[{"lang":"en","value":"Omnigent is an open-source AI agent framework and meta-harness for orchestrating coding agents. Prior to 0.3.0, the shared shell-command parser in omnigent/policies/builtins/_shell.py fails to recognize combined interpreter flags, the timeout, nice, setsid, and stdbuf wrappers, command substitutions, and a single background control operator. A gated git push or gh write hidden with these forms produces no parsed operation, causing the github.py write_repos and write_branches allowlist and the working_dir.py workspace confinement policies to abstain and allow the command. An authenticated or prompt-injected agent can therefore push to an unauthorized repository or branch or escape the intended workspace. This issue is fixed in version 0.3.0."}],"affected":[{"vendor":"omnigent-ai","product":"omnigent","versions":[{"version":"< 0.3.0","status":"affected"}]}],"references":[{"url":"https://github.com/omnigent-ai/omnigent/security/advisories/GHSA-7mqg-cx4g-x2rf","name":"https://github.com/omnigent-ai/omnigent/security/advisories/GHSA-7mqg-cx4g-x2rf","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/omnigent-ai/omnigent/pull/389","name":"https://github.com/omnigent-ai/omnigent/pull/389","tags":["x_refsource_MISC"]},{"url":"https://github.com/omnigent-ai/omnigent/commit/1a05b7b139ef504bf2be89bf37918abe104fb95c","name":"https://github.com/omnigent-ai/omnigent/commit/1a05b7b139ef504bf2be89bf37918abe104fb95c","tags":["x_refsource_MISC"]},{"url":"https://github.com/omnigent-ai/omnigent/releases/tag/v0.3.0","name":"https://github.com/omnigent-ai/omnigent/releases/tag/v0.3.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-184","lang":"en","description":"CWE-184: Incomplete List of Disallowed Inputs","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-21T17:42:21.563Z"},"source":{"advisory":"GHSA-7mqg-cx4g-x2rf","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-26T17:31:50.102854Z","id":"CVE-2026-62676","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-26T17:32:00.761Z"}}]}}}