CVE-2026-76956
Medium
Description
In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content.
SeverityMedium
CVSS5.9
Exploit probability—
ProductLibexpat
PublishedAug 20, 2026
First seenAug 20, 2026
Weakness typeCWE-394CWE-394
How to fix
Update
- libexpat_project libexpat2.8.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| libexpat_project libexpat | 2.8.2 ≤ v < 2.8.4 | 2.8.4 |
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