CVE-2026-76956
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, c
Published Aug 20, 2026 · updated Oct 16, 2026
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.
Code
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Timeline
Detection, updates, and resolution for this record.
Aug 20, 2026 · OSV.dev
Detected
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.
Oct 16, 2026 · OSV.dev
Fix available
expat fixed in 2.9.0-1~deb13u1; expat fixed in 2.8.4-1
Oct 16, 2026 · OSV.dev
Fix available
expat fixed in 2.9.0-1~deb13u1
Oct 16, 2026 · OSV.dev
Fix available
expat fixed in 2.8.4-1
Oct 16, 2026 · OSV.dev
Updated
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.
Affected
- Debian:13 expat0 → 2.9.0-1~deb13u1
- Debian:14 expat0 → 2.8.4-1