6.3
MediumCVSS 4.0 · from GitHub_M
CVE-2026-61848
Crass: Non-ASCII characters cause superlinear CPU consumption
crass · Uncontrolled resource use · CWE-400Affectedcrass
FixNo fix listed yet.
PublishedOct 30, 18:45 · GitHub_M
ScoredOct 30 · 6.3 · GitHub_M
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:06 UTC
What we know
No known exploitation. CISA KEV, checked 22:06 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.
It only works under certain conditions, which makes it harder to pull off. CVSS: high attack complexity.
Description
Crass is a Ruby CSS parser that's fully compliant with the CSS Syntax Level 3 specification. Prior to 1.0.7, when Crass parses input containing `non-ASCII characters`, inefficiencies in tracking the positions of `multi-byte characters` result in superlinear parsing time. An attacker-controlled CSS input consisting of many `non-ASCII characters` can therefore cause excessive CPU consumption and potentially denial of service. This issue is fixed in version 1.0.7.
From GitHub_M
Affected and fixed versions
ProductAffectedFixed incrass< 1.0.7–
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known