{"cve":"CVE-2018-19838","nvd":{"published":"2018-12-04T09:29:00.490","modified":"2026-06-17T01:49:58.560","status":"Modified","description":"In LibSass prior to 3.5.5, functions inside ast.cpp for IMPLEMENT_AST_OPERATORS expansion allow attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file, as demonstrated by recursive calls involving clone(), cloneChildren(), and copy().","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-400"],"references":["http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html","http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html","http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html","https://github.com/sass/libsass/issues/2660","http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html"],"products":["sass-lang:libsass"],"source":"nvd","synced_at":"2026-10-19T20:53:59.789560037+00:00"},"epss":{"cve":"CVE-2018-19838","score":0.01928,"percentile":0.79977,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}