CVE Watch14 oct 2026

CVE-2021-45960

In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbeh

CVSS

8.8

Alto

EPSS

4.7%

p92

KEV

—

Exploit Today

0-100

Publicado: 1 ene 2022 · Última mod.: 14 oct 2026 · CWE-682

EPSS · 30d

4.3%EPSS · 30 días4.7%

2026-10-172026-11-13

Descripción técnica

In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).

Referencias oficiales

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