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ALPINE-CVE-2021-45960

ALPINE-CVE-2021-45960 PUBLISHED CVSS 8.800000190734863 HIGH

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).

Risk Scores

CVSS v3.1
8.800000190734863
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products

VendorProductVersions
Alpine:v3.18expat2.4.2-r0, 2.2.10-r0, 2.2.10-r1
Alpine:v3.15expat2.2.9-r0, 0, 2.0.1-r0
Alpine:v3.19expat2.0.1-r6, 2.1.0-r0, 2.1.0-r1
Alpine:v3.23expat2.1.0-r0, 2.2.10-r1, 2.2.10-r0
Alpine:v3.21expat2.2.10-r0, 2.2.10-r1, 2.2.10-r0
Alpine:v3.20expat0, 0, 2.0.1-r0
Alpine:v3.16expat0, 2.0.1-r0, 2.0.1-r1
Alpine:v3.13expat2.0.1-r6, 2.0.1-r1, 0
Alpine:v3.14expat2.2.10-r0, 0, 2.0.1-r0
Alpine:v3.17expat2.0.1-r5, 2.4.2-r0, 2.4.1-r0
Alpine:v3.22expat2.2.0-r1, 2.4.2-r0, 2.4.1-r0
Alpine:v3.12expat2.0.1-r0, 2.2.9-r1, 2.2.9-r0

Timeline

  • Jan 1, 2022 CVE Published
  • Dec 3, 2025 CVE Updated
  • Apr 30, 2026 Distribution Patch
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