CVE-2022-36085
OPA Compiler: Bypass of WithUnsafeBuiltins using `with` keyword to mock functions
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.6% · top 24% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.
Weakness
Affected products
- affected >= 0.40.0, < 0.43.1
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/open-policy-agent/opaGHSA-f524-rf33-2jjr (opens in a new tab)
References (6)
- https://github.com/open-policy-agent/opa/security/advisories/GHSA-f524-rf33-2jjr (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/open-policy-agent/opa/pull/4540 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/open-policy-agent/opa/pull/4616 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/open-policy-agent/opa/commit/25a597bc3f4985162e7f65f9c36599f4f8f55823 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/open-policy-agent/opa/commit/3e8c754ed007b22393cf65e48751ad9f6457fee8 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/open-policy-agent/opa/releases/tag/v0.43.1 (opens in a new tab)x_refsource_MISCx_transferred
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)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-f524-rf33-2jjr (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-36085)Record last updated .