{"id":"CVE-2023-39663","aliases":["EUVD-2023-2355","GHSA-v638-q856-grg8","UBUNTU-CVE-2023-39663"],"status":"disputed","title":"MathJax Regular expression Denial of Service (ReDoS)","description":"Mathjax up to v2.7.9 was discovered to contain two Regular expression Denial of Service (ReDoS) vulnerabilities in MathJax.js via the components pattern and markdownPattern. NOTE: the vendor disputes this because the regular expressions are not applied to user input; thus, there is no risk.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00819,"percentile":0.57672,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1333"],"published":"2023-08-29T00:00:00Z","modified":"2026-10-28T02:30:39Z","affected":[{"source":"ghsa","ecosystem":"npm","package":"mathjax","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.7.9"}]}]},{"source":"osv","ecosystem":"npm","package":"mathjax","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"2.7.9"}]}]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"mathjax","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2-1","2.3-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"mathjax","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.3-1","2.6.0-1","2.6.1-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"mathjax","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.0-2ubuntu1","2.7.2+dfsg-1","2.7.3+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"mathjax","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.4+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"mathjax","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.9+dfsg-1"]}],"products":[{"vendor":"mathjax","product":"mathjax"}],"references":[{"url":"https://github.com/mathjax/MathJax/issues/3074","tags":["x_transferred","Exploit","Issue Tracking","Vendor Advisory","report","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-39663","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-v638-q856-grg8"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39663.json","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-39663","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-39663","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-39663","description":"Mathjax up to v2.7.9 was discovered to contain two Regular expression Denial of Service (ReDoS) vulnerabilities in MathJax.js via the components pattern and markdownPattern. NOTE: the vendor disputes this because the regular expressions are not applied to user input; thus, there is no risk.","status":"disputed","published":"2023-08-29T00:00:00Z","modified":"2024-10-02T13:23:58.981Z","updated_at":"2026-11-02T14:35:33.462059Z"}],"euvd":[{"id":"EUVD-2023-2355","description":"Mathjax up to v2.7.9 was discovered to contain two Regular expression Denial of Service (ReDoS) vulnerabilities in MathJax.js via the components pattern and markdownPattern. NOTE: the vendor disputes this because the regular expressions are not applied to user input; thus, there is no risk.","status":"published","published":"2023-08-29T00:00:00Z","modified":"2024-10-02T13:23:58Z","updated_at":"2026-11-03T00:27:59.473662Z"}],"ghsa":[{"id":"GHSA-v638-q856-grg8","title":"MathJax Regular expression Denial of Service (ReDoS)","description":"Mathjax up to v2.7.9 was discovered to contain two Regular expression Denial of Service (ReDoS) vulnerabilities in MathJax.js via the components pattern and markdownPattern. NOTE: the vendor disputes this because the regular expressions are not applied to user input; thus, there is no risk.\n\n","status":"published","published":"2023-08-29T21:30:21Z","modified":"2024-01-31T00:02:47Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:37:34.405364Z"}],"nvd":[{"id":"CVE-2023-39663","description":"Mathjax up to v2.7.9 was discovered to contain two Regular expression Denial of Service (ReDoS) vulnerabilities in MathJax.js via the components pattern and markdownPattern. NOTE: the vendor disputes this because the regular expressions are not applied to user input; thus, there is no risk.","status":"disputed","published":"2023-08-29T20:15:09.99Z","modified":"2026-06-17T06:12:41.51Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:08:25.025396Z"}],"osv":[{"id":"GHSA-v638-q856-grg8","title":"MathJax Regular expression Denial of Service (ReDoS)","description":"Mathjax up to v2.7.9 was discovered to contain two Regular expression Denial of Service (ReDoS) vulnerabilities in MathJax.js via the components pattern and markdownPattern. NOTE: the vendor disputes this because the regular expressions are not applied to user input; thus, there is no risk.\n\n","status":"published","published":"2023-08-29T21:30:21Z","modified":"2026-09-10T03:49:57.725467096Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T15:46:56.639206Z"},{"id":"UBUNTU-CVE-2023-39663","description":"Mathjax up to v2.7.9 was discovered to contain two Regular expression Denial of Service (ReDoS) vulnerabilities in MathJax.js via the components pattern and markdownPattern. NOTE: the vendor disputes this because the regular expressions are not applied to user input; thus, there is no risk.","status":"published","published":"2023-08-29T20:15:00Z","modified":"2025-10-24T05:02:14Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:22.741943Z"},{"id":"CVE-2023-39663","description":"Mathjax up to v2.7.9 was discovered to contain two Regular expression Denial of Service (ReDoS) vulnerabilities in MathJax.js via the components pattern and markdownPattern. NOTE: the vendor disputes this because the regular expressions are not applied to user input; thus, there is no risk.","status":"published","published":"2023-08-29T00:00:00Z","modified":"2026-10-28T02:30:39.653764056Z","updated_at":"2026-11-02T15:44:33.244128Z"}]}}