CVE-2026-126078

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.

• CWE-79

• 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
• https://github.com/rails/rails/security/advisories/GHSA-v6rj-xm57-3p59

Published

Nov 10, 2026

Last Modified

Nov 12, 2026

Status

Awaiting Analysis

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-126072Action Pack is a framework for handling and responding to we…5.9
• CVE-2026-126073Action Pack is a framework for handling and responding to we…4.8
• CVE-2026-126074Active Storage makes it simple to upload and reference files…4.3
• CVE-2026-126075Active Support is a collection of utility classes and standa…4.7
• CVE-2026-126076Action Pack is a framework for handling and responding to we…4.2
• CVE-2026-126077Action Pack is a framework for handling and responding to we…6.8
• CVE-2026-126079Action View is a framework for handling view template lookup…6.1
• CVE-2026-126080Active Support is a collection of utility classes and standa…7.5
• CVE-2026-126081Action Pack is a framework for handling and responding to we…7.5
• CVE-2026-126082Rejected reason: This CVE is a duplicate of another CVE.
• CVE-2026-126083Action Pack is a framework for handling and responding to we…7.4
• CVE-2026-126084Active Storage makes it simple to upload and reference files…4.7