{"id":"CVE-2026-0969","aliases":["GHSA-g4xw-jxrg-5f6m"],"url":"https://o3.security/vulnerability/CVE-2026-0969","summary":"Arbitrary code execution in React server-side rendering of untrusted MDX content","details":"The serialize function used to compile MDX in next-mdx-remote is vulnerable to arbitrary code execution due to insufficient sanitization of MDX content. This vulnerability, CVE-2026-0969, is fixed in next-mdx-remote 6.0.0.","published":"2026-02-12T01:35:06.231Z","modified":"2026-08-12T03:51:18.062247473Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"next-mdx-remote","fixedVersion":"6.0.0"}],"fix":{"url":"https://github.com/hashicorp/next-mdx-remote/commit/4d527fdcaed911b87f427d0b4d3c711e817fa4b3","label":"hashicorp/next-mdx-remote@4d527fd"},"references":[{"type":"WEB","url":"https://discuss.hashicorp.com/t/hcsec-2026-01-arbitrary-code-execution-in-react-server-side-rendering-of-untrusted-mdx-content/77155"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0969.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0969"},{"type":"PACKAGE","url":"https://github.com/hashicorp/next-mdx-remote"},{"type":"WEB","url":"https://github.com/hashicorp/next-mdx-remote/commit/4d527fdcaed911b87f427d0b4d3c711e817fa4b3"},{"type":"WEB","url":"https://github.com/hashicorp/next-mdx-remote/releases/tag/v6.0.0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:18.062247473Z"}}