CVE-2025-5399
WebSocket endless loop
- State
- Published
- Severity
- 7.5 High
- Published
- Jun 7, 2025
- Updated
- Jun 9, 2025
- Reserved
- May 31, 2025
Description
Due to a mistake in libcurl's WebSocket code, a malicious server can send a particularly crafted packet which makes libcurl get trapped in an endless busy-loop.
There is no other way for the application to escape or exit this loop other than killing the thread/process.
This might be used to DoS libcurl-using application.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
curlcurl |
|
References
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