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CVE-2026-56132

CVSS 6.9 · Medium

Possible ATT&CK Techniques 1AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProductVersion RangeStatus
libexpat projectlibexpat< 2.8.2affected
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I. Basic Information for CVE-2026-56132

Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing array reallocation is mishandled when there is data-structure sharing across parsers.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
不正确的同步机制
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
libexpat projectlibexpat 0 ~ 2.8.2 -

II. Public POCs for CVE-2026-56132

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III. Intelligence Information for CVE-2026-56132

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Patches & Fixes for CVE-2026-56132 (1)

IV. Related Vulnerabilities

Same product: libexpat
Same vendor: libexpat project
Same weakness: CWE-821

V. Comments for CVE-2026-56132

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