{"id":"CVE-2026-126078","state":"PUBLISHED","title":"Action View: Possible XSS vulnerability in Action View highlight helper","description":"Action View is a framework for handling view template lookup and rendering and provides view helpers for building HTML. Prior to 8.1.4.1 and 8.0.5.2, ActionView::Helpers::TextHelper#highlight substitutes each matched phrase into the :highlighter string without escaping it and returns the result marked HTML-safe. Because sanitizing leaves quote characters in text unescaped, a match substituted into a quoted attribute value of the highlighter, such as the <a href=\"search?q=\\1\"> form shown in the method's documentation, could end the attribute value and add attributes to the element, possibly leading to XSS. Applications are affected when they pass a :highlighter that places a placeholder inside an attribute value and highlight text or phrases that a user controls. The default <mark>\\1</mark> highlighter and the block form are not affected. This issue is fixed in versions 8.1.4.1 and 8.0.5.2.","publishedAt":"2026-11-10T21:00:49.416Z","updatedAt":"2026-11-10T21:00:49.416Z","severity":{"score":6.1,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["rails rails"],"affected":[{"vendor":"rails","product":"rails","versions":[{"version":"< 8.0.5.2","status":"affected"},{"version":">= 8.1, < 8.1.4.1","status":"affected"}]}],"references":["https://github.com/rails/rails/security/advisories/GHSA-v6rj-xm57-3p59","https://github.com/rails/rails/commit/06938194b4fd59e1d2c8ab4a781f3c1e2b763425","https://github.com/rails/rails/commit/c796f6198837479ada13290eb8fa767b5219a58a","https://github.com/rails/rails/releases/tag/v8.0.5.2","https://github.com/rails/rails/releases/tag/v8.1.4.1"],"weaknesses":["CWE-79"],"ingestedAt":"2026-11-10T21:14:06.595Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/126xxx/CVE-2026-126078.json","commit":"c5a01f083f4f1bb59d77be7743a509cc9f9b04ca","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-126078","state":"PUBLISHED","datePublished":"2026-11-10T21:00:49.416Z","dateUpdated":"2026-11-10T21:00:49.416Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-11-10T17:07:43.285Z"},"containers":{"cna":{"title":"Action View: Possible XSS vulnerability in Action View highlight helper","descriptions":[{"lang":"en","value":"Action View is a framework for handling view template lookup and rendering and provides view helpers for building HTML. Prior to 8.1.4.1 and 8.0.5.2, ActionView::Helpers::TextHelper#highlight substitutes each matched phrase into the :highlighter string without escaping it and returns the result marked HTML-safe. Because sanitizing leaves quote characters in text unescaped, a match substituted into a quoted attribute value of the highlighter, such as the <a href=\"search?q=\\1\"> form shown in the method's documentation, could end the attribute value and add attributes to the element, possibly leading to XSS. Applications are affected when they pass a :highlighter that places a placeholder inside an attribute value and highlight text or phrases that a user controls. The default <mark>\\1</mark> highlighter and the block form are not affected. This issue is fixed in versions 8.1.4.1 and 8.0.5.2."}],"affected":[{"vendor":"rails","product":"rails","versions":[{"version":"< 8.0.5.2","status":"affected"},{"version":">= 8.1, < 8.1.4.1","status":"affected"}]}],"references":[{"url":"https://github.com/rails/rails/security/advisories/GHSA-v6rj-xm57-3p59","name":"https://github.com/rails/rails/security/advisories/GHSA-v6rj-xm57-3p59","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/rails/rails/commit/06938194b4fd59e1d2c8ab4a781f3c1e2b763425","name":"https://github.com/rails/rails/commit/06938194b4fd59e1d2c8ab4a781f3c1e2b763425","tags":["x_refsource_MISC"]},{"url":"https://github.com/rails/rails/commit/c796f6198837479ada13290eb8fa767b5219a58a","name":"https://github.com/rails/rails/commit/c796f6198837479ada13290eb8fa767b5219a58a","tags":["x_refsource_MISC"]},{"url":"https://github.com/rails/rails/releases/tag/v8.0.5.2","name":"https://github.com/rails/rails/releases/tag/v8.0.5.2","tags":["x_refsource_MISC"]},{"url":"https://github.com/rails/rails/releases/tag/v8.1.4.1","name":"https://github.com/rails/rails/releases/tag/v8.1.4.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-11-10T21:00:49.416Z"},"source":{"advisory":"GHSA-v6rj-xm57-3p59","discovery":"UNKNOWN"}}}}}