undici is vulnerable to Unbounded Memory Consumption in undici WebSocket permessage-deflate Decompression
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-vrm6-8vpv-qv8q | Undici has Unbounded Memory Consumption in WebSocket permessage-deflate Decompression |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: 1.3% (1.279% probability within 30 days)
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| First Time appeared |
Nodejs
Nodejs undici |
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| CPEs | cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* | |
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Nodejs
Nodejs undici |
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ssvc
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| First Time appeared |
Undici
Undici undici |
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| Vendors & Products |
Undici
Undici undici |
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| Weaknesses | CWE-770 | |
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threat_severity
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threat_severity
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| Description | The undici WebSocket client is vulnerable to a denial-of-service attack via unbounded memory consumption during permessage-deflate decompression. When a WebSocket connection negotiates the permessage-deflate extension, the client decompresses incoming compressed frames without enforcing any limit on the decompressed data size. A malicious WebSocket server can send a small compressed frame (a "decompression bomb") that expands to an extremely large size in memory, causing the Node.js process to exhaust available memory and crash or become unresponsive. The vulnerability exists in the PerMessageDeflate.decompress() method, which accumulates all decompressed chunks in memory and concatenates them into a single Buffer without checking whether the total size exceeds a safe threshold. | |
| Title | undici is vulnerable to Unbounded Memory Consumption in undici WebSocket permessage-deflate Decompression | |
| Weaknesses | CWE-409 | |
| References |
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| Metrics |
cvssV3_1
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