{"id":"CVE-2022-36085","summary":"OPA Compiler: Bypass of WithUnsafeBuiltins using `with` keyword to mock functions","details":"Open Policy Agent (OPA) is an open source, general-purpose policy engine. The Rego compiler provides a (deprecated) `WithUnsafeBuiltins` function, which allows users to provide a set of built-in functions that should be deemed unsafe — and as such rejected — by the compiler if encountered in the policy compilation stage. A bypass of this protection has been found, where the use of the `with` keyword to mock such a built-in function (a feature introduced in OPA v0.40.0), isn’t taken into account by `WithUnsafeBuiltins`. Multiple conditions need to be met in order to create an adverse effect. Version 0.43.1 contains a patch for this issue. As a workaround, avoid using the `WithUnsafeBuiltins` function and use the `capabilities` feature instead.","aliases":["GHSA-f524-rf33-2jjr","GO-2022-0978"],"modified":"2026-04-10T04:49:13.641584Z","published":"2022-09-08T13:30:16Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/36xxx/CVE-2022-36085.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-20","CWE-693"]},"references":[{"type":"WEB","url":"https://github.com/open-policy-agent/opa/releases/tag/v0.43.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/36xxx/CVE-2022-36085.json"},{"type":"ADVISORY","url":"https://github.com/open-policy-agent/opa/security/advisories/GHSA-f524-rf33-2jjr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-36085"},{"type":"FIX","url":"https://github.com/open-policy-agent/opa/commit/25a597bc3f4985162e7f65f9c36599f4f8f55823"},{"type":"FIX","url":"https://github.com/open-policy-agent/opa/commit/3e8c754ed007b22393cf65e48751ad9f6457fee8"},{"type":"FIX","url":"https://github.com/open-policy-agent/opa/pull/4540"},{"type":"FIX","url":"https://github.com/open-policy-agent/opa/pull/4616"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/open-policy-agent/opa","events":[{"introduced":"b3c8d80111fa487d44ae84666f8d821e0a977a5a"},{"fixed":"196c92df8b936e0b211b2d2ac767cbb89949060f"}]}],"versions":["v0.40.0","v0.41.0","v0.42.0","v0.43.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-36085.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}