{"id":"CVE-2021-32723","state":"PUBLISHED","title":"Regular Expression Denial of Service (ReDoS) in Prism","description":"Prism is a syntax highlighting library. Some languages before 1.24.0 are vulnerable to Regular Expression Denial of Service (ReDoS). When Prism is used to highlight untrusted (user-given) text, an attacker can craft a string that will take a very very long time to highlight. This problem has been fixed in Prism v1.24. As a workaround, do not use ASCIIDoc or ERB to highlight untrusted text. Other languages are not affected and can be used to highlight untrusted text.","publishedAt":"2021-06-28T19:15:15.000Z","updatedAt":"2024-08-03T23:33:54.878Z","severity":{"score":7.4,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["PrismJS prism"],"affected":[{"vendor":"PrismJS","product":"prism","versions":[{"version":"< 1.24","status":"affected"}]}],"references":["https://github.com/PrismJS/prism/security/advisories/GHSA-gj77-59wh-66hg","https://github.com/PrismJS/prism/pull/2688","https://github.com/PrismJS/prism/pull/2774","https://www.oracle.com/security-alerts/cpujan2022.html"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T19:48:33.225Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/32xxx/CVE-2021-32723.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-32723","state":"PUBLISHED","datePublished":"2021-06-28T19:15:15.000Z","dateUpdated":"2024-08-03T23:33:54.878Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2021-05-12T00:00:00.000Z"},"containers":{"cna":{"title":"Regular Expression Denial of Service (ReDoS) in Prism","descriptions":[{"lang":"en","value":"Prism is a syntax highlighting library. Some languages before 1.24.0 are vulnerable to Regular Expression Denial of Service (ReDoS). When Prism is used to highlight untrusted (user-given) text, an attacker can craft a string that will take a very very long time to highlight. This problem has been fixed in Prism v1.24. As a workaround, do not use ASCIIDoc or ERB to highlight untrusted text. Other languages are not affected and can be used to highlight untrusted text."}],"affected":[{"vendor":"PrismJS","product":"prism","versions":[{"version":"< 1.24","status":"affected"}]}],"references":[{"url":"https://github.com/PrismJS/prism/security/advisories/GHSA-gj77-59wh-66hg","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/PrismJS/prism/pull/2688","tags":["x_refsource_MISC"]},{"url":"https://github.com/PrismJS/prism/pull/2774","tags":["x_refsource_MISC"]},{"url":"https://www.oracle.com/security-alerts/cpujan2022.html","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","dateUpdated":"2022-02-07T14:42:13.000Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa"},"source":{"advisory":"GHSA-gj77-59wh-66hg","discovery":"UNKNOWN"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2021-32723","STATE":"PUBLIC","TITLE":"Regular Expression Denial of Service (ReDoS) in Prism"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"prism","version":{"version_data":[{"version_value":"< 1.24"}]}}]},"vendor_name":"PrismJS"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Prism is a syntax highlighting library. Some languages before 1.24.0 are vulnerable to Regular Expression Denial of Service (ReDoS). When Prism is used to highlight untrusted (user-given) text, an attacker can craft a string that will take a very very long time to highlight. This problem has been fixed in Prism v1.24. As a workaround, do not use ASCIIDoc or ERB to highlight untrusted text. 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