{"api_version":"1","generated_at":"2026-07-24T23:43:19+00:00","cve":"CVE-2022-23548","urls":{"html":"https://cve.report/CVE-2022-23548","api":"https://cve.report/api/cve/CVE-2022-23548.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-23548","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-23548"},"summary":{"title":"CVE-2022-23548","description":"Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 2.9.0.beta16 on the `beta` and `tests-passed` branches, parsing posts can be susceptible to regular expression denial of service (ReDoS) attacks. This issue is patched in versions 2.8.14 and 2.9.0.beta16. There are no known workarounds.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2023-01-05 19:15:00","updated_at":"2023-05-16 11:15:00"},"problem_types":["CWE-1333"],"metrics":[],"references":[{"url":"https://github.com/discourse/discourse/pull/19737","name":"https://github.com/discourse/discourse/pull/19737","refsource":"MISC","tags":[],"title":"SECURITY: use rstrip instead of regex gsub to prevent ReDOS by tgxworld · Pull Request #19737 · discourse/discourse · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/discourse/discourse/security/advisories/GHSA-7rw2-f4x7-7pxf","name":"https://github.com/discourse/discourse/security/advisories/GHSA-7rw2-f4x7-7pxf","refsource":"MISC","tags":[],"title":"Regex susceptible to ReDOS · Advisory · discourse/discourse · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-23548","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-23548","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta10","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta11","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta12","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta13","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta14","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta2","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta3","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta4","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta5","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta6","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta7","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"2.9.0","cpe7":"beta8","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23548","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"discourse","cpe5":"discourse","cpe6":"3.0.0","cpe7":"beta15","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2022-23548","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 2.9.0.beta16 on the `beta` and `tests-passed` branches, parsing posts can be susceptible to regular expression denial of service (ReDoS) attacks. This issue is patched in versions 2.8.14 and 2.9.0.beta16. There are no known workarounds."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-1333: Inefficient Regular Expression Complexity","cweId":"CWE-1333"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"discourse","product":{"product_data":[{"product_name":"discourse","version":{"version_data":[{"version_value":"< 2.8.14","version_affected":"="},{"version_value":">= 2.9.0.beta0, <  2.9.0.beta16","version_affected":"="}]}}]}}]}},"references":{"reference_data":[{"url":"https://github.com/discourse/discourse/security/advisories/GHSA-7rw2-f4x7-7pxf","refsource":"MISC","name":"https://github.com/discourse/discourse/security/advisories/GHSA-7rw2-f4x7-7pxf"},{"url":"https://github.com/discourse/discourse/pull/19737","refsource":"MISC","name":"https://github.com/discourse/discourse/pull/19737"}]},"source":{"advisory":"GHSA-7rw2-f4x7-7pxf","discovery":"UNKNOWN"},"impact":{"cvss":[{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}]}},"nvd":{"publishedDate":"2023-01-05 19:15:00","lastModifiedDate":"2023-05-16 11:15:00","problem_types":["CWE-1333"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":3.6}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta3:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta4:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta5:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta7:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta8:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta6:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta10:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta11:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta12:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta13:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:2.9.0:beta14:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:3.0.0:beta15:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*","versionEndExcluding":"2.8.14","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2022","CveId":"23548","Ordinal":"226395","Title":"CVE-2022-23548","CVE":"CVE-2022-23548","Year":"2022"},"notes":[{"CveYear":"2022","CveId":"23548","Ordinal":"1","NoteData":"** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}