{"id":"CVE-2026-93752","published":"2026-09-18T18:18:34.320","lastModified":"2026-09-22T20:25:55.870","description":"CSSOM through 0.5.0 contains a denial of service vulnerability in CSSStyleDeclaration.setProperty() that fails to validate reserved property names. Attackers can supply a stylesheet with a declaration named length to replace the internal counter and trigger excessive memory allocation during cssText serialization, causing process termination.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-915"],"vendors":[],"products":[],"references":[{"url":"https://github.com/NV/CSSOM","tags":[]},{"url":"https://github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.js#L112-L124","tags":[]},{"url":"https://github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.js#L41-L56","tags":[]},{"url":"https://github.com/NV/CSSOM/issues/119","tags":[]},{"url":"https://www.vulncheck.com/advisories/cssom-through-0.5.0-denial-of-service-via-length-property","tags":[]},{"url":"https://github.com/NV/CSSOM/issues/119","tags":[]}],"exploitRefs":[{"url":"https://github.com/NV/CSSOM","tags":[]},{"url":"https://github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.js#L112-L124","tags":[]},{"url":"https://github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.js#L41-L56","tags":[]},{"url":"https://github.com/NV/CSSOM/issues/119","tags":[]},{"url":"https://github.com/NV/CSSOM/issues/119","tags":[]}],"hasPoc":true,"ai":null}