undici WebSocket client vulnerable to denial of service via fragment count bypass
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| undici | undici | unaffected |
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Configuration 1 [-]
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No data.
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| Undici | Undici |
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| Source | ID | Title |
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Github GHSA |
GHSA-vxpw-j846-p89q | undici WebSocket client vulnerable to denial of service via fragment count bypass |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.789% probability within 30 days)
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| First Time appeared |
Undici
Undici undici |
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| Vendors & Products |
Undici
Undici undici |
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threat_severity
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threat_severity
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| Description | Impact: The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size validation, collectively causing unbounded memory growth in the client process. The result is memory exhaustion and a denial of service. Affected applications are those using the undici WebSocket client (new WebSocket(...)) or the WebSocketStream API that can be induced to connect to an attacker-controlled or compromised WebSocket endpoint. All releases starting at undici 6.17.0 are affected. Patches: Upgrade to undici >= 6.26.0, >= 7.28.0, or >= 8.5.0. Workarounds: No workaround is available. The fix must be applied through an upgrade. | |
| Title | undici WebSocket client vulnerable to denial of service via fragment count bypass | |
| Weaknesses | CWE-400 CWE-770 |
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cvssV3_1
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