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CVE-2026-93990highCWE-176

Expat through 2.8.4 Malformed UTF-16 Acceptance via Unchecked Surrogate

21Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 8.7epss 0.3%
probabilidad de explotación
0.3%top 72% de las CVE
explotación observada
noninguna fuente lo reporta
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Productos afectados
libexpat · libexpat