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.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 23 Oct 2026 00:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | libexpat through 2.9.0 Denial of Service via Billion Laughs Detection Delay | |
| First Time appeared |
Libexpat Project
Libexpat Project libexpat |
|
| Weaknesses | CWE-776 | |
| CPEs | cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Libexpat Project
Libexpat Project libexpat |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-22T19:14:06.001Z
Reserved: 2026-10-22T16:14:59.466Z
Link: CVE-2026-115506
No data.
Status : Received
Published: 2026-10-22T20:17:06.620
Modified: 2026-10-22T20:17:06.620
Link: CVE-2026-115506
No data.
OpenCVE Enrichment
Updated: 2026-10-23T04:00:12Z
Weaknesses