CVE-2026-61847

Crass is a Ruby CSS parser that's fully compliant with the CSS Syntax Level 3 specification. Prior to 1.0.7, when the `:preserve_comments` option is not enabled, which is the default, Crass discards CSS comments by recursively consuming the next token. An attacker-provided stylesheet containing a very large number of adjacent comments can cause excessive recursion and trigger a `SystemStackError`, denying service to the parsing application. Preserving comments avoids this recursive path. This issue is fixed in version 1.0.7.

• CWE-674

• https://github.com/rgrove/crass/commit/25d78cc607c54262e9d43ea1930f3ba5bb03dfb5
• https://github.com/rgrove/crass/releases/tag/v1.0.7
• https://github.com/rgrove/crass/security/advisories/GHSA-wwpr-jff3-395c

Published

Oct 30, 2026

Last Modified

Oct 30, 2026

Status

Deferred

• 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-2026-61841Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMB…
• CVE-2026-61842Grav is a file-based Web platform. Prior to 2.0.2, the Grav …6.5
• CVE-2026-61843FileRise is a self-hosted web-based file manager with multi-…8.2
• CVE-2026-61844FileRise is a self-hosted web-based file manager with multi-…7.1
• CVE-2026-61845Crass is a Ruby CSS parser that's fully compliant with the C…8.9
• CVE-2026-61846Crass is a Ruby CSS parser that's fully compliant with the C…6.3
• CVE-2026-61848Crass is a Ruby CSS parser that's fully compliant with the C…6.3
• CVE-2026-61850Kargo manages and automates the promotion of software artifa…9.3
• CVE-2026-61851Chartbrew is an open-source web application that can connect…6.5
• CVE-2026-61852Chartbrew is an open-source web application that can connect…5.8
• CVE-2026-61854VoiceSentinel is a real-time voice moderation system for Min…8.2
• CVE-2026-61855Zammad is a web based open source helpdesk/customer support …5.3