{"cve":"CVE-2026-54490","nvd":{"published":"2026-07-17T21:17:08.780","modified":"2026-10-24T20:10:00.137","status":"Deferred","description":"websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.7.5, if this library is used with the permessage-deflate extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size because the limit is checked against the message frames' length headers, which give the size of the compressed data, not the size after decompression in lib/websocket/driver/hybi.js. This can lead to applications accepting larger messages than expected and exceeding their intended resource usage. This issue is fixed in version 0.7.5.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L","score":6.3},"cvss_v3":null,"cwes":["CWE-770"],"references":["https://github.com/faye/websocket-driver-node/commit/c55679a5b18251dd0a55d18a0cc6a4fd8822b92f","https://github.com/faye/websocket-driver-node/security/advisories/GHSA-mp7j-qc5w-4988"],"products":[],"source":"nvd","synced_at":"2026-10-25T17:50:08.599881581+00:00"},"epss":{"cve":"CVE-2026-54490","score":0.00445,"percentile":0.384,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-mp7j-qc5w-4988","url":"https://osv.dev/vulnerability/GHSA-mp7j-qc5w-4988","summary":"websocket-driver: Resource limit bypass via message compression","modified":"2026-09-10T03:50:52.769661814Z","packages":[{"ecosystem":"npm","name":"websocket-driver","purl":"pkg:npm/websocket-driver","ranges":["<0.7.5"],"fixed":["0.7.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}