{"id":"CVE-2021-23341","aliases":["GHSA-h4hr-7fg3-h35w"],"url":"https://o3.security/vulnerability/CVE-2021-23341","summary":"Denial of service in prismjs","details":"The package prismjs before 1.23.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the prism-asciidoc, prism-rest, prism-tap and prism-eiffel components.","published":"2021-02-18T16:15:14.143Z","modified":"2026-07-09T00:12:50.273867Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":4,"affectedPackages":[{"ecosystem":"npm","name":"prismjs","fixedVersion":"1.23.0"}],"fix":{"url":"https://github.com/PrismJS/prism/commit/c2f6a64426f44497a675cb32dccb079b3eff1609","label":"PrismJS/prism@c2f6a64"},"references":[{"type":"FIX","url":"https://github.com/PrismJS/prism/commit/c2f6a64426f44497a675cb32dccb079b3eff1609"},{"type":"FIX","url":"https://github.com/PrismJS/prism/issues/2583"},{"type":"FIX","url":"https://github.com/PrismJS/prism/pull/2584"},{"type":"EVIDENCE","url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1076583"},{"type":"EVIDENCE","url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076582"},{"type":"EVIDENCE","url":"https://snyk.io/vuln/SNYK-JS-PRISMJS-1076581"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:12:50.273867Z"}}