high7.5
CVE-2026-115506
libexpat through 2.9.0 contains a denial of service vulnerability because billion laughs protection in accountingDiffTolerated() in xmlparse.c detects entity a…
Impact
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 seconds of CPU per parse.
Affected products
| Product | Affected versions |
|---|---|
| Libexpat | through 2.9.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.