CVE-2026-115506

Versions of libexpat through 2.9.0 are vulnerable to a Denial of Service (DoS) attack caused by a detection delay in the Billion Laughs protection mechanism. The root cause is located in the accountingDiffTolerated() function within xmlparse.c, which identifies entity amplification too late. An a...

EUVD-2026-108338

libexpat through 2.9.0 contains a denial of service vulnerability because billion laughs protection in accountingDiffTolerated in xmlparse.c detects entity amplification too late. Attackers can supply a moderately sized XML document with a large DTD and nested entity expansions to consume tens of...