{"id":"CVE-2026-61848","summary":"Crass: Non-ASCII characters cause superlinear CPU consumption","details":"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.","aliases":["GHSA-8vfg-2r28-hvhj"],"modified":"2026-11-01T02:47:39.002163861Z","published":"2026-10-30T18:45:20.036Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-400"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61848.json"},"references":[{"type":"WEB","url":"https://github.com/rgrove/crass/releases/tag/v1.0.7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61848.json"},{"type":"ADVISORY","url":"https://github.com/rgrove/crass/security/advisories/GHSA-8vfg-2r28-hvhj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61848"},{"type":"FIX","url":"http://github.com/rgrove/crass/commit/da29664648bf80a97a6439e030a4814291c9afa5"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/rgrove/crass","events":[{"introduced":"0"},{"fixed":"cfd5daa3ce23cd7b2356acf90ecb7a02defe002c"},{"fixed":"da29664648bf80a97a6439e030a4814291c9afa5"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"0"},{"fixed":"1.0.7"}],"source":"AFFECTED_FIELD","strategy":"StringRangeExpression"},{"original_tag":"v1.0.7","range":[{"fixed":"cfd5daa3ce23cd7b2356acf90ecb7a02defe002c"}],"source":"REFERENCES_TAG"},{"source":"REFERENCES_COMMIT","range":[{"fixed":"da29664648bf80a97a6439e030a4814291c9afa5"}]}]}}],"versions":["v1.0.6","v1.0.5","v1.0.4","v1.0.3","v1.0.2","v1.0.1","v1.0.0","v0.2.1","v0.2.0","v0.1.0","v0.0.2","v0.0.1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-61848.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L"}]}