{"id":"CVE-2023-28111","summary":"Discourse vulnerable to SSRF protection bypass possible with IPv4-mapped IPv6 addresses","details":"Discourse is an open-source discussion platform. Prior to version 3.1.0.beta3 of the `beta` and `tests-passed` branches, attackers are able to bypass Discourse's server-side request forgery (SSRF) protection for private IPv4 addresses by using a IPv4-mapped IPv6 address. The issue is patched in the latest beta and tests-passed version of Discourse. version 3.1.0.beta3 of the `beta` and `tests-passed` branches. There are no known workarounds.","aliases":["BIT-discourse-2023-28111","GHSA-26h3-8ww8-v5fc"],"modified":"2026-08-12T03:51:36.842382404Z","published":"2023-03-17T17:00:04.375Z","database_specific":{"cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28111.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28111.json"},{"type":"ADVISORY","url":"https://github.com/discourse/discourse/security/advisories/GHSA-26h3-8ww8-v5fc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28111"},{"type":"FIX","url":"https://github.com/discourse/discourse/commit/fd16eade7fcc6bba4b71e71106a2eb13cdfdae4a"},{"type":"FIX","url":"https://github.com/discourse/discourse/pull/20710"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/discourse/discourse","events":[{"introduced":"0"},{"fixed":"0876f262e932da2478ed1d2ec275bd2153001213"},{"introduced":"17daf077e2f11def391859f83d294bb71760b1cf"},{"fixed":"fd16eade7fcc6bba4b71e71106a2eb13cdfdae4a"}],"database_specific":{"source":["CPE_RANGE","CPE_STRING","REFERENCES"],"cpe":["cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:*","cpe:2.3:a:discourse:discourse:3.1.0:beta1:*:*:beta:*:*:*","cpe:2.3:a:discourse:discourse:3.1.0:beta2:*:*:beta:*:*:*"],"extracted_events":[{"introduced":"0"},{"fixed":"3.1.0"},{"introduced":"3.1.0-beta1"},{"last_affected":"3.1.0-beta1"},{"introduced":"3.1.0-beta2"},{"last_affected":"3.1.0-beta2"}]}}],"versions":["3.1.0-beta1","3.1.0-beta2","beta \u003c 3.1.0.beta3","v3.0.6","v3.0.5","v3.0.4","v3.0.3","v3.0.2","v3.0.1","v3.1.0.beta2","v3.0.0","v3.1.0.beta1","v2.8.14","v2.8.13","v2.8.12","v2.8.11","v2.8.10","v2.8.9","v2.8.8","v2.8.7","v2.8.6","v2.8.5","v2.8.4","v2.8.3","v2.8.2","v2.8.1","v2.8.0","v2.7.13","v2.7.12","v2.7.11","v2.7.10","v2.7.9","v2.7.8","v2.7.7","v2.7.6","v2.7.5","v2.7.4","v2.7.3","v2.7.2","v2.7.1","v2.7.0","v2.6.7","v2.6.6","v2.6.5","v2.6.4","v2.6.3","v2.6.2","v2.6.1","v2.6.0","v2.5.5","v2.5.4","v2.5.3","v2.5.2","v2.5.1","v2.5.0","v2.4.5","v2.4.4","v2.4.3","v2.4.2","v2.4.1","v2.4.0","v2.3.10","v2.3.9","v2.3.8","v2.3.7","v2.3.6","v2.3.5","v2.3.4","v2.3.3","v2.3.2","v2.3.1","v2.3.0","v2.2.6","v2.2.5","v2.2.4","v2.2.3","v2.2.2","v2.2.1","v2.2.0","v2.1.8","v2.1.7","v2.1.6","v2.1.5","v2.1.4","v2.1.3","v2.1.2","v2.1.1","v2.1.0","v2.0.5","v2.0.4","v2.0.3","v2.0.2","v2.0.1","v2.0.0","v1.9.7","v1.9.6","v1.9.5","v1.9.4","v1.9.3","v1.9.2","v1.9.1","v1.9.0","v1.8.11","v1.8.10","v1.8.9","v1.8.8","v1.8.7","v1.8.6","v1.8.5","v1.8.4","v1.8.3","v1.8.2","v1.8.1","v1.8.0","v1.7.10","v1.7.9","v1.7.8","v1.7.7","v1.7.6","v1.7.5","v1.7.4","v1.7.3","v1.7.2","v1.7.1","v1.7.0","v1.6.10","v1.6.9","v1.6.8","v1.6.7","v1.6.6","v1.6.5","v1.6.4","v1.6.3","v1.6.2","v1.6.1","v1.6.0","v1.5.4","v1.5.3","v1.5.2","v1.5.1","v1.5.0","v1.4.7","v1.4.6","v1.4.5","v1.4.4","v1.4.3","v1.4.2","v1.4.1","v1.4.0","v1.3.5","v1.3.4","v1.3.3","v1.3.2","v1.3.1","v1.3.0","v1.2.4","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.4","v1.0.3","v1.0.2","v1.0.1","v1.0.0","v0.9.9.18","v0.9.9.17","v0.9.9.16","v0.9.9.15","v0.9.9.14","v0.9.9.13","v0.9.9.12","v0.9.9.11","v0.9.9.10","v0.9.9.9","v0.9.9.8","v0.9.9.7","v0.9.9.6","v0.9.9.5","v0.9.9.4","v0.9.9.3","v0.9.9.2","v0.9.9.1","v0.9.8.11","v0.9.8.10","v0.9.8.9","v0.9.8.8","v0.9.8.7","v0.9.8.6","v0.9.8.5","v0.9.8.4","v0.9.8.3","v0.9.8.2","v0.9.8.1","v0.9.8","v0.9.7.9","v0.9.7.8","v0.9.7.7","v0.9.7.6","v0.9.7.5","v0.9.7.4","v0.9.7.3","v0.9.7.2","v0.9.7.1","v0.9.7","v0.9.6.4","v0.9.6.3","v0.9.6.1","v0.9.6","v0.9.5.2","v0.9.5.1","v0.9.5","v0.9.4","v0.9.3","v0.9.2.6","v0.9.2.5","v0.9.2","v0.9.1","v0.9.0","v0.8.9","v0.8.8","v0.8.7","v0.8.6","v0.8.5","v0.8.4","v0.8.3","v0.8.2","v0.8.1","v0.8.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-28111.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N"}]}