{"id":"GHSA-p4cg-3328-rvfg","summary":"Orval: Import-time RCE via query-parameter default -\u003e zod module-level template literal","details":"### Summary\n\nOrval's zod schema generation emits the **query-parameter** `default` value as a module-level template literal\n(`export const …Default = `\u003cdefault\u003e`;`) without escaping `${` or the backtick. A default of the form\n`v${\u003ccode\u003e}w` injects a live JavaScript expression evaluated when the generated zod schema module is\nimported, executing attacker-controlled code at import — no request or function call needed. Verified\non Orval 8.19.0; survives default OpenAPI validation.\n\n### Details\n\n```ts\nexport const …Default = `v${globalThis.ORVPWN()}w`;   // ${...} = arbitrary JS expression, runs at import\n```\n\nMalicious input: a query parameter with a `default` of `v${\u003cattacker JS\u003e}w`. `${...}` permits any JS expression.\n\nNote: this is one of several `default`-bearing positions that reach the same unescaped zod\ntemplate-literal sink; a single fix (escape `default` values) closes all of them, and a CNA may choose\nto consolidate the related reports.\n\n### PoC\n\n`reproduce.sh` (+ `make_spec.py`) attached: generates the zod schema with default validation, bundles\nit, imports it, and shows a marker written at import. Verified on 8.19.0.\n\n### Impact\n\nCode execution at import in any application that imports a zod schema module generated from an\nattacker-controlled or attacker-influenced OpenAPI description.\n\n### Suggested fix\n\nEmit `default` values via a proper string-literal encoder (JSON.stringify, or escape backtick and `${`\nif a template literal must be used); never interpolate a spec value into a template literal. Apply to\nevery `default` position.\n[maintainer-report.txt](https://github.com/user-attachments/files/29399067/maintainer-report.txt)\n[make_spec.py](https://github.com/user-attachments/files/29399068/make_spec.py)\n[reproduce.sh](https://github.com/user-attachments/files/29399069/reproduce.sh)","aliases":["CVE-2026-72716"],"modified":"2026-09-02T15:00:09.983937397Z","published":"2026-09-02T14:53:14Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-09-02T14:53:14Z","nvd_published_at":"2026-08-19T18:17:25Z","cwe_ids":["CWE-1336"],"severity":"CRITICAL"},"references":[{"type":"WEB","url":"https://github.com/orval-labs/orval/security/advisories/GHSA-p4cg-3328-rvfg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72716"},{"type":"WEB","url":"https://github.com/orval-labs/orval/pull/3692"},{"type":"WEB","url":"https://github.com/orval-labs/orval/commit/8ef1bfdf3f9bcaf9dabfbe2e42887f1c0e159ab6"},{"type":"PACKAGE","url":"https://github.com/orval-labs/orval"},{"type":"WEB","url":"https://github.com/orval-labs/orval/releases/tag/v8.21.0"}],"affected":[{"package":{"name":"orval","ecosystem":"npm","purl":"pkg:npm/orval"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.21.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-p4cg-3328-rvfg/GHSA-p4cg-3328-rvfg.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}