CVE-2026-56132

MEDIUM EPSS 0.5%
Published Jun 19, 20261w ago · Modified Jun 23, 20261w ago
6.9 CVSS 3.1
Medium
Find Similar
Published Jun 19, 2026 1w ago
Last Modified Jun 23, 2026 1w ago

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.

CVSS Details

Base Score
6.9
Exploitability
1.4
Impact
5.5
Vector string
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Attack Vector Local
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability Low

Threat Intelligence

EPSS Exploit Probability
0.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-821

Affected Products 1

VendorProductVersionRange
libexpat_projectlibexpat* <2.8.2

References 1

  • github.com https://github.com/libexpat/libexpat/pull/1272
    Patch

Remediation

  • github.com https://github.com/libexpat/libexpat/pull/1272
    Patch