{"id":"CVE-2026-91119","revision":null,"records":[{"revision":"67dbee766c844ce29dfd58017f6abe7c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-91119","aliases":[],"title":"Discourse: Encode action_code_who in mention URLs","description":"Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, the topic small-action and nested-activity-log components interpolated the free-form action_code_who value into mention-link href attributes without URL encoding. A quote-bearing display name could terminate the intended URL attribute and inject attacker-controlled elements into the trusted rendered markup. Although the visible mention text was escaped, the unencoded path component allowed stored HTML injection when another user viewed the affected topic action or activity log. This issue is fixed in versions 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0.","state":0,"publishedAt":"2026-09-24T17:07:04.367+00:00","modifiedAt":"2026-09-28T15:00:02.275+00:00","affected":[{"ecosystem":"Vendor product","name":"discourse","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"discourse\",\n                    \"product\": \"discourse\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2026.8.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2026.7.0-latest, < 2026.7.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2026.6.0-latest, < 2026.6.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2026.1.0-latest, < 2026.1.8\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","score":6.4,"severity":"MEDIUM"}],"references":["https://github.com/discourse/discourse/security/advisories/GHSA-pv3p-p3m9-v8v3","https://github.com/discourse/discourse/pull/42882","https://github.com/discourse/discourse/commit/20dbf112760eb1d6a58f2e49aeef7546898b6f1c","https://github.com/discourse/discourse/commit/66653c484cfb91bc346f9a326f6945387f17b035","https://github.com/discourse/discourse/commit/77a81c7a3a7ff9e94b355e32b8f379f2d389e05a","https://github.com/discourse/discourse/commit/c4748f651d9d2f3a6dd3106a4d5564536c645168"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-91119","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-91119","identifiers":["CVE-2026-91119"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-12T08:55:39.4193399+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-12T08:55:39.4193399+00:00","lastSuccessAt":"2026-11-12T08:55:39.5669336+00:00","error":null,"lastVerifiedAt":"2026-11-12T08:55:39.5669352+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-64752486c567b55b31fb0d7225f5222bcd0019564ac0ac5f0649e242c7b19299-cdca8464672f7a6b0a4c4e58984a9b57c5e15d71ae2ddc7e2ff782639942ab38","complete":true,"records":424631,"lastAttemptAt":"2026-11-12T08:53:35.355196+00:00","lastSuccessAt":"2026-11-12T08:53:35.3149634+00:00","error":null,"lastVerifiedAt":"2026-11-12T08:53:35.355196+00:00","snapshotPublishedAt":"2026-11-12T08:30:19+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-570328139368428ca550af1570d01579","complete":true,"records":13760,"lastAttemptAt":"2026-11-12T08:56:06.8263277+00:00","lastSuccessAt":"2026-11-12T06:55:06.923+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:55:06.923+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13813,"expectedIdentifiers":13813,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-12T08:55:39.4193399+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-12T08:55:39.4193399+00:00","lastSuccessAt":"2026-11-12T08:55:39.5676932+00:00","error":null,"lastVerifiedAt":"2026-11-12T08:55:39.5676956+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-723ec20d092d41278189b87b8cbcf51e","complete":false,"records":13760,"lastAttemptAt":"2026-11-12T08:56:05.5820299+00:00","lastSuccessAt":"2026-11-12T08:56:05.578+00:00","error":null,"lastVerifiedAt":"2026-11-12T08:56:05.578+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13313,"expectedIdentifiers":13813,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-3562b6c78fd1bd0f0b55daf66a0926ae24f65e462df7f6d928caad458fc696bf","complete":true,"records":9947,"lastAttemptAt":"2026-11-12T08:55:35.2753592+00:00","lastSuccessAt":"2026-11-11T04:27:43.6877707+00:00","error":null,"lastVerifiedAt":"2026-11-12T08:55:35.2753592+00:00","snapshotPublishedAt":"2026-11-11T03:32:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-456002455e0ab94bb92c95476d4e6d175c104cd594749982afd96c893728ecbc","complete":true,"records":2010,"lastAttemptAt":"2026-11-12T08:53:35.4094441+00:00","lastSuccessAt":"2026-11-11T02:36:58.1276999+00:00","error":null,"lastVerifiedAt":"2026-11-12T08:53:35.4094441+00:00","snapshotPublishedAt":"2026-11-11T01:17:51+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-44cd3a7b61439dd4e0dd867616b5261e169a9e59821f22444c84d86fd81b6f2e","complete":true,"records":3106,"lastAttemptAt":"2026-11-12T08:55:39.3774946+00:00","lastSuccessAt":"2026-11-12T08:55:39.2342768+00:00","error":null,"lastVerifiedAt":"2026-11-12T08:55:39.3774946+00:00","snapshotPublishedAt":"2026-11-12T08:18:06+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-c924bd892f7cff2008ba8f06b2d1a456e8a821e4c475408ea0c699c9c1fbf82c","complete":true,"records":231700,"lastAttemptAt":"2026-11-12T08:55:35.1386298+00:00","lastSuccessAt":"2026-11-12T08:55:33.6769659+00:00","error":null,"lastVerifiedAt":"2026-11-12T08:55:35.1386298+00:00","snapshotPublishedAt":"2026-11-12T08:33:11+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}