CVE-2026-25896
קריטית 9.3
תיאור (מקור, אנגלית)
fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. From 4.1.3to before 5.3.5, a dot (.) in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow built-in XML entities (<, >, &, ", ') with arbitrary values. This bypasses entity encoding and leads to XSS when parsed output is rendered. This vulnerability is fixed in 5.3.5.
מדדים
- CVSS 3.1
-
9.3 (CRITICAL)
מקור הציון: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N - EPSS — סבירות ניצול
- 0% (אחוזון 000) נכון ל-23/9/2026
- CWE
- CWE-185, CWE-79
מוצרים מושפעים
naturalintelligence: fast-xml-parser
קישורים
- https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHS… ExploitMitigationVendor Advisory
- https://github.com/NaturalIntelligence/fast-xml-parser/commit/943ef0eb1b2d3284… Patch
- https://github.com/NaturalIntelligence/fast-xml-parser/commit/ddcd0acf26ddd682… Patch
- https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.3.5 ProductRelease Notes
- https://access.redhat.com/errata/RHSA-2026:40984
- https://access.redhat.com/errata/RHSA-2026:41941
- https://access.redhat.com/errata/RHSA-2026:41944
- https://access.redhat.com/errata/RHSA-2026:51349
- https://access.redhat.com/errata/RHSA-2026:6174
- https://access.redhat.com/errata/RHSA-2026:6802