{"id":"CVE-2026-96757","published":"2026-09-23T17:17:24.923","lastModified":"2026-09-23T18:17:12.200","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.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-94"],"vendors":[],"products":[],"references":[{"url":"https://github.com/orval-labs/orval","tags":[]},{"url":"https://github.com/orval-labs/orval/blob/v8.28.1/packages/fetch/src/index.ts#L584","tags":[]},{"url":"https://github.com/orval-labs/orval/commit/43af282d62dca0ef3140023741fb768f6a718adb","tags":[]},{"url":"https://github.com/orval-labs/orval/commit/a2d4af59f3b167dc8a7a65d15f51cdb89ebe2fe5","tags":[]},{"url":"https://github.com/orval-labs/orval/pull/4007","tags":[]},{"url":"https://github.com/orval-labs/orval/security/advisories/GHSA-4q3x-rqfw-3x8p","tags":[]},{"url":"https://github.com/orval-labs/orval/security/advisories/GHSA-rcpr-mq4m-jx9j","tags":[]},{"url":"https://www.vulncheck.com/advisories/orval-before-8.29.0-code-injection-via-unescaped-openapi-media-type","tags":[]},{"url":"https://github.com/orval-labs/orval/security/advisories/GHSA-4q3x-rqfw-3x8p","tags":[]}],"exploitRefs":[{"url":"https://github.com/orval-labs/orval","tags":[]},{"url":"https://github.com/orval-labs/orval/blob/v8.28.1/packages/fetch/src/index.ts#L584","tags":[]},{"url":"https://github.com/orval-labs/orval/commit/43af282d62dca0ef3140023741fb768f6a718adb","tags":[]},{"url":"https://github.com/orval-labs/orval/commit/a2d4af59f3b167dc8a7a65d15f51cdb89ebe2fe5","tags":[]},{"url":"https://github.com/orval-labs/orval/pull/4007","tags":[]},{"url":"https://github.com/orval-labs/orval/security/advisories/GHSA-4q3x-rqfw-3x8p","tags":[]},{"url":"https://github.com/orval-labs/orval/security/advisories/GHSA-rcpr-mq4m-jx9j","tags":[]},{"url":"https://github.com/orval-labs/orval/security/advisories/GHSA-4q3x-rqfw-3x8p","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows attackers to inject JavaScript by exploiting crafted media-type keys in OpenAPI specifications, leading to remote code execution.","exploitability":"Exploitation is relatively easy given the preconditions of an affected version and a crafted OpenAPI specification.","blast_radius":"If exploited, the impact could be severe, as it allows remote code execution, potentially leading to full system compromise.","remediation":"Upgrade to orval 8.29.0 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","web","api","security"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-27T08:51:22.297Z"}}