What’s Vulnerable › Vulnerabilities
CVE-2026-56132
- Severity: medium (CVSS 6.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-19 · updated 2026-10-26
- Weakness: CWE-821
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.
Affected products
- libexpat project libexpat: before 2.8.2 — fixed in 2.8.2
How to fix
Upgrade to a fixed version: libexpat project libexpat 2.8.2. Check the vendor advisory for mitigations.
References
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