{"schemaVersion":3,"id":"CVE-2026-0969","aliases":["GHSA-g4xw-jxrg-5f6m"],"status":"published","duplicateOf":null,"title":null,"description":"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.","dates":{"published":"2026-02-12T01:35:06.231Z","modified":"2026-04-17T17:57:55.801Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Npm","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","exploitability":7.2,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","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","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00648,"percentile":0.50142,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.054999999999999924,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00593},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00648,"percentile":0.50142}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00593,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00606,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00648,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00648,"percentile":0.50142}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-94","name":"Improper Control of Generation of Code ('Code Injection')","description":"The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/94.html"}],"affected":[{"vendor":"hashicorp","product":"shared library","name":"Shared library","label":"shared library","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 4.3.0, < 6.0.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 4.3.0, < 6.0.0","eol":null,"hubHref":"/vendor/hashicorp/shared_library"},{"vendor":"Npm","product":"next-mdx-remote","name":"next-mdx-remote","label":"next-mdx-remote","ecosystem":"Npm","cpePart":null,"purl":"pkg:npm/next-mdx-remote","purlType":"npm","versions":[{"text":"≥ 4.3.0, < 6.0.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 4.3.0, < 6.0.0","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://discuss.hashicorp.com/t/hcsec-2026-01-arbitrary-code-execution-in-react-server-side-rendering-of-untrusted-mdx-content/77155","label":"discuss.hashicorp.com/t/…","hostname":"discuss.hashicorp.com","tags":["WEB"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0969","label":"nvd.nist.gov/vuln/detail/CVE-2026-0969","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/hashicorp/next-mdx-remote/commit/4d527fdcaed911b87f427d0b4d3c711e817fa4b3","label":"github.com/hashicorp/next-mdx-remote/commit/4d527fdcaed911b87f427d0b4d3c711e817fa4b3","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/hashicorp/next-mdx-remote","label":"github.com/hashicorp/next-mdx-remote","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://github.com/hashicorp/next-mdx-remote/releases/tag/v6.0.0","label":"github.com/hashicorp/next-mdx-remote/releases/tag/v6.0.0","hostname":"github.com","tags":["WEB"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-02-12T01:35:06.231Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-17T17:57:55.801Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T05:45:53.551Z","stale":false,"partial":false}}