critical9.2
CVE-2026-54466
websocket-driver: Message corruption via abuse of protocol length headers
Impact
websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.7.5, the frame format in draft versions of the WebSocket protocol includes a length header that allows an arbitrarily large integer to be encoded as a sequence of bytes with the high bit set. By sending an indefinite sequence of bytes with values 0x80 or above, a client can make the server parse these bytes into an ever-growing integer in lib/websocket/driver/draft75.js; because JavaScript numbers are 64-bit floating point values, this number will eventually lose precision and lead to the subsequent payload being parsed incorrectly. This issue is fixed in version 0.7.5.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | websocket-driver | < 0.7.5 | 0.7.5 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Faye | Websocket-Driver | before 0.7.5 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-xv26-6w52-cph6
- https://github.com/faye/websocket-driver-node/security/advisories/GHSA-xv26-6w52-cph6
- https://github.com/faye/websocket-driver-node/releases/tag/0.7.5
- https://github.com/faye/websocket-driver-node/commit/5b197ca874dab58e96cacad8a3c256797d804680