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.
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 |
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| Weaknesses | CWE-776 | |
| CPEs | cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Libexpat Project
Libexpat Project libexpat |
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| References |
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| Metrics |
cvssV3_1
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Projects
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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 : Awaiting Analysis
Published: 2026-10-22T20:17:06.620
Modified: 2026-10-23T19:45:03.547
Link: CVE-2026-115506
No data.
OpenCVE Enrichment
Updated: 2026-10-23T06:15:12Z
Weaknesses