{"id":"CVE-2023-45806","aliases":["BIT-discourse-2023-45806","EUVD-2023-50093","GHSA-hcgf-hg2g-mw78"],"status":"published","title":"Discourse vulnerable to DoS via Regexp Injection in Full Name","description":"Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the \"bleeding\" by ensuring users only use alphanumeric characters in their full name field.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01193,"percentile":0.68405,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-1333"],"published":"2023-11-10T14:43:37Z","modified":"2026-10-28T02:30:56Z","exploits":[{"source":"pocgithub","id":"yksivaihde/discourse-CVE-2023-45806","title":"yksivaihde/discourse-CVE-2023-45806","date":"2025-03-14","url":"https://github.com/yksivaihde/discourse-CVE-2023-45806"}],"fixes":[{"ecosystem":"Bitnami","package":"discourse","fixed_in":["3.2.0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"discourse","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.2.0"}]}]}],"products":[{"vendor":"discourse","product":"discourse"}],"references":[{"url":"https://github.com/discourse/discourse/security/advisories/GHSA-hcgf-hg2g-mw78","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","advisory"]},{"url":"https://github.com/discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863","tags":["x_refsource_MISC","x_transferred","Patch","fix"]},{"url":"https://github.com/discourse/discourse/commit/7d484864fe91ff79c478f57e7ddb1235d701921e","tags":["x_refsource_MISC","x_transferred","Patch","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-45806","tags":["web","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45806.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-45806","title":"Discourse vulnerable to DoS via Regexp Injection in Full Name","description":"Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the \"bleeding\" by ensuring users only use alphanumeric characters in their full name field.","status":"published","published":"2023-11-10T14:43:37.657Z","modified":"2024-09-03T17:43:41.68Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:35:22.984825Z"}],"euvd":[{"id":"EUVD-2023-50093","description":"Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the \"bleeding\" by ensuring users only use alphanumeric characters in their full name field.","status":"published","published":"2023-11-10T14:43:37Z","modified":"2024-09-03T17:43:41Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T00:56:05.515988Z"}],"nvd":[{"id":"CVE-2023-45806","description":"Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the \"bleeding\" by ensuring users only use alphanumeric characters in their full name field.","status":"published","published":"2023-11-10T15:15:08.44Z","modified":"2026-06-17T06:29:33.55Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"primary"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:08:46.647045Z"}],"osv":[{"id":"CVE-2023-45806","title":"Discourse vulnerable to DoS via Regexp Injection in Full Name","description":"Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the \"bleeding\" by ensuring users only use alphanumeric characters in their full name field.","status":"published","published":"2023-11-10T14:43:37.657Z","modified":"2026-10-28T02:30:56.46559998Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T15:44:34.287121Z"},{"id":"BIT-discourse-2023-45806","title":"Discourse vulnerable to DoS via Regexp Injection in Full Name","description":"Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the \"bleeding\" by ensuring users only use alphanumeric characters in their full name field.","status":"published","published":"2024-03-06T10:52:56.903Z","modified":"2026-09-08T08:46:14.072597262Z","updated_at":"2026-11-02T15:28:28.70813Z"}]}}