{"id":"CVE-2026-96757","aliases":["EUVD-2026-85407","GHSA-2hg7-crf6-4xp2"],"status":"published","title":"orval before 8.29.0 Code Injection via unescaped OpenAPI media-type","description":"orval before 8.29.0 fails to escape OpenAPI media-type keys when emitting them into single-quoted Content-Type string literals in generated code. Attackers can inject JavaScript through crafted media-type keys in OpenAPI specifications that executes when generated fetch operations or mock resolvers are invoked.","severity":{"version":"4.0","score":9.3,"vector":"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","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00816,"percentile":0.5736,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-94"],"published":"2026-09-23T16:23:55Z","modified":"2026-10-28T02:30:33Z","products":[{"vendor":"orval-labs","product":"orval"}],"references":[{"url":"https://github.com/orval-labs/orval/security/advisories/GHSA-4q3x-rqfw-3x8p","tags":["vendor-advisory","exploit","advisory"]},{"url":"https://github.com/orval-labs/orval/security/advisories/GHSA-rcpr-mq4m-jx9j","tags":["vendor-advisory","advisory"]},{"url":"https://github.com/orval-labs/orval/pull/4007","tags":["patch","issue-tracking","fix"]},{"url":"https://github.com/orval-labs/orval/commit/43af282d62dca0ef3140023741fb768f6a718adb","tags":["patch","fix"]},{"url":"https://github.com/orval-labs/orval/commit/a2d4af59f3b167dc8a7a65d15f51cdb89ebe2fe5","tags":["patch","fix"]},{"url":"https://github.com/orval-labs/orval/blob/v8.28.1/packages/fetch/src/index.ts#L584","tags":["technical-description","article"]},{"url":"https://github.com/orval-labs/orval","tags":["product","package"]},{"url":"https://www.vulncheck.com/advisories/orval-before-8.29.0-code-injection-via-unescaped-openapi-media-type","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96757","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-2hg7-crf6-4xp2"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/96xxx/CVE-2026-96757.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-96757","title":"orval before 8.29.0 Code Injection via unescaped OpenAPI media-type","description":"orval before 8.29.0 fails to escape OpenAPI media-type keys when emitting them into single-quoted Content-Type string literals in generated code. Attackers can inject JavaScript through crafted media-type keys in OpenAPI specifications that executes when generated fetch operations or mock resolvers are invoked.","status":"published","published":"2026-09-23T16:23:55.164Z","modified":"2026-09-23T17:48:29.041Z","cvss":[{"version":"4.0","score":9.3,"vector":"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","level":"critical","assessor":"cna"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:20:00.511569Z"}],"euvd":[{"id":"EUVD-2026-85407","description":"orval before 8.29.0 fails to escape OpenAPI media-type keys when emitting them into single-quoted Content-Type string literals in generated code. Attackers can inject JavaScript through crafted media-type keys in OpenAPI specifications that executes when generated fetch operations or mock resolvers are invoked.","status":"published","published":"2026-09-23T16:23:55Z","modified":"2026-09-23T17:48:29Z","cvss":[{"version":"4.0","score":9.3,"vector":"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","level":"critical"}],"updated_at":"2026-11-02T17:28:00.617613Z"}],"ghsa":[{"id":"GHSA-2hg7-crf6-4xp2","title":"orval before 8.29.0 fails to escape OpenAPI media-type keys when emitting them into single-quoted...","description":"orval before 8.29.0 fails to escape OpenAPI media-type keys when emitting them into single-quoted Content-Type string literals in generated code. Attackers can inject JavaScript through crafted media-type keys in OpenAPI specifications that executes when generated fetch operations or mock resolvers are invoked.","status":"published","published":"2026-09-23T18:31:57Z","modified":"2026-09-23T18:32:05Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"},{"version":"4.0","score":9.3,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:12:21.120874Z"}],"nvd":[{"id":"CVE-2026-96757","description":"orval before 8.29.0 fails to escape OpenAPI media-type keys when emitting them into single-quoted Content-Type string literals in generated code. Attackers can inject JavaScript through crafted media-type keys in OpenAPI specifications that executes when generated fetch operations or mock resolvers are invoked.","status":"published","published":"2026-09-23T17:17:24.923Z","modified":"2026-09-23T18:17:12.2Z","cvss":[{"version":"4.0","score":9.3,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:12:50.703874Z"}],"osv":[{"id":"CVE-2026-96757","title":"orval before 8.29.0 Code Injection via unescaped OpenAPI media-type","description":"orval before 8.29.0 fails to escape OpenAPI media-type keys when emitting them into single-quoted Content-Type string literals in generated code. Attackers can inject JavaScript through crafted media-type keys in OpenAPI specifications that executes when generated fetch operations or mock resolvers are invoked.","status":"published","published":"2026-09-23T16:23:55.164Z","modified":"2026-10-28T02:30:33.630860929Z","cvss":[{"version":"4.0","score":9.3,"vector":"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","level":"critical"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:45:21.262447Z"}]}}