CVE-2026-56132
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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.9
- CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
- EPSS probability
- 0.10%
- CWE
- CWE-821
- Published
- 2026-06-19
- Last modified
- 2026-06-22
Affected products
- libexpat project libexpat
Weakness type
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