CVE-2026-61845 (GCVE-0-2026-61845)
Vulnerability from cvelistv5 – Published: 2026-10-30 18:41 – Updated: 2026-10-30 19:41
VLAI
EPSS
VEX
Title
Crass: Large numeric exponents cause CPU and memory denial of service
Summary
Crass is a Ruby CSS parser that's fully compliant with the CSS Syntax Level 3 specification. Prior to 1.0.7, Crass converts `CSS scientific notation` number values with unbounded exponentiation before clamping the result to `Float::MAX`. Applications that use Crass to parse attacker-controlled CSS strings can be forced to spend disproportionate CPU and memory parsing a tiny input, potentially resulting in a crash. This issue is fixed in version 1.0.7.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 19:40 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/rgrove/crass/security/advisori… | x_refsource_CONFIRM |
| https://github.com/rgrove/crass/commit/ea6726b7f7… | x_refsource_MISC |
| https://github.com/rgrove/crass/releases/tag/v1.0.7 | x_refsource_MISC |
Impacted products
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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