Description
An integer overflow vulnerability exists in the WebSocket component of Mongoose 7.5 thru 7.17. By sending a specially crafted WebSocket request, an attacker can cause the application to crash. If downstream vendors integrate this component improperly, the issue may lead to a buffer overflow.
Affected products
cesanta: mongoose
References3
- github.com/cesanta/mongoose/pull/3131 Issue TrackingPatch
- github.com/cainiao159357/CVE-2025-51495 Exploit
- github.com/cesanta/mongoose Product
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 37 · as of 9 November 2026
- CWE
- CWE-190
Could this be exploited in your environment?
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