CVE-2026-61847
MEDIUM
MEDIUM
Priority: 0.00
BB Relevance:
73/100
Published: 2026-10-30
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
X
AT:
Present
VC:
None
VI:
None
VA:
Low
Description
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.
Weakness Classification (1)
References & Advisories (3)
x_refsource_MISC
x_refsource_MISC
x_refsource_CONFIRM