CVE-2026-93990
7.5 HIGHpublic exploit availablePublished 2026-09-19 · Updated 2026-09-22
AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.
NVD description
Expat through 2.8.4 fails to validate low surrogates following high surrogates in UTF-16 input, allowing malformed UTF-16 sequences to be accepted. Attackers can craft UTF-16 encoded XML with lone high surrogates that consume following code units, hiding markup characters from the parser and enabling XML injection attacks.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weaknesses
CWE-176
Public exploit & PoC references
References
Data: NVD (public domain). Analysis: local $0 model. Defensive use only.