{"schemaVersion":3,"id":"CVE-2021-23382","aliases":["UBUNTU-CVE-2021-23382","DEBIAN-CVE-2021-23382","GHSA-566m-qj78-rww5"],"status":"published","duplicateOf":null,"title":null,"description":"The package postcss before 8.2.13 are vulnerable to Regular Expression Denial of Service (ReDoS) via getAnnotationURL() and loadAnnotation() in lib/previous-map.js. The vulnerable regexes are caused mainly by the sub-pattern \\/\\*\\s* sourceMappingURL=(.*).","dates":{"published":"2021-04-26T15:30:26.301Z","modified":"2024-09-16T23:26:53.744Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","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","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","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","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Npm","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":10,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","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","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.02557,"percentile":0.84935,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.04899999999999974,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.02508},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.02508,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.02508,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.02508,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.02508,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.02508,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.02508,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02508,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.02508,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02508,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.02557,"percentile":0.84935}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.02508,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02508,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.02557,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.02557,"percentile":0.84935}]},"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":[{"id":"REF_D9E09FEF8078E396","name":"Exploit Reference (snyk.io)","source":"reference","url":"https://snyk.io/vuln/SNYK-JS-POSTCSS-1255640","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null},{"id":"REF_137BACCFE86ABD08","name":"Exploit Reference (snyk.io)","source":"reference","url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1255641","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":2,"weaknesses":[{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity","description":"The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/1333.html"}],"affected":[{"vendor":"debian","product":"node-postcss","name":"node-postcss","label":"node-postcss","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/node-postcss","purlType":"deb","versions":[{"text":"< 8.2.1+~cs5.3.23-7","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 8.2.1+~cs5.3.23-7","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"node-postcss","name":"node-postcss","label":"node-postcss","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/node-postcss","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"Npm","product":"postcss","name":"postcss","label":"postcss","ecosystem":"Npm","cpePart":null,"purl":"pkg:npm/postcss","purlType":"npm","versions":[{"text":"≥ 8.0.0, < 8.2.13","noFixRecorded":false,"fixedIn":null},{"text":"< 7.0.36","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 8.0.0, < 8.2.13 | < 7.0.36","eol":null,"hubHref":null},{"vendor":"postcss","product":"postcss","name":"postcss","label":"postcss","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 7.0.36","noFixRecorded":false,"fixedIn":null},{"text":"≥ 8.0.0, < 8.2.13","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 7.0.36 | ≥ 8.0.0, < 8.2.13","eol":null,"hubHref":"/vendor/postcss/postcss"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://snyk.io/vuln/SNYK-JS-POSTCSS-1255640","label":"snyk.io/vuln/SNYK-JS-POSTCSS-1255640","hostname":"snyk.io","tags":["X Refsource MISC","REPORT","WEB","Exploit","Patch","Third Party Advisory"]},{"url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1255641","label":"snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1255641","hostname":"snyk.io","tags":["X Refsource MISC","REPORT","WEB","Exploit","Patch","Third Party Advisory"]},{"url":"https://github.com/postcss/postcss/commit/2b1d04c867995e55124e0a165b7c6622c1735956","label":"github.com/postcss/postcss/commit/2b1d04c867995e55124e0a165b7c6622c1735956","hostname":"github.com","tags":["X Refsource MISC","REPORT","WEB","Patch","Third Party Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-23382","label":"ubuntu.com/security/CVE-2021-23382","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://github.com/postcss/postcss/commit/2ad1ca9b965dde32223bee28dc259c339cbaaa05","label":"github.com/postcss/postcss/commit/2ad1ca9b965dde32223bee28dc259c339cbaaa05","hostname":"github.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-23382","label":"www.cve.org/CVERecord?id=CVE-2021-23382","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-23382","label":"security-tracker.debian.org/tracker/CVE-2021-23382","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23382","label":"nvd.nist.gov/vuln/detail/CVE-2021-23382","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/postcss/postcss/releases/tag/7.0.36","label":"github.com/postcss/postcss/releases/tag/7.0.36","hostname":"github.com","tags":["WEB"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-04-26T15:30:26.301Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-16T23:26:53.744Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":41,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T17:43:56.370Z","stale":false,"partial":false}}