CVE catalog
CVE-2026-54463
websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily lar
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.49% · Oct 25, 2026
websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80 or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket connection consume an unbounded amount of memory and lead to the host process running out of memory. This issue is fixed in version 0.8.1.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ruby-websocket-driver | sid | 0.8.2-1 | fixed |
| Debian | ruby-websocket-driver | forky | 0.8.2-1 | fixed |
| Debian | ruby-websocket-driver | trixie | 0.6.3-3 | vulnerable |
| Debian | ruby-websocket-driver | bookworm | 0.6.3-3 | vulnerable |
| Rubygems | websocket-driver | Not reported | 0.8.1 | fixed |
| Cpe | ruby-websocket-driver | Not reported | Not reported | vulnerable |
| Cpe | websocket-driver | Not reported | 0.8.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ruby-websocket-driver | source | sid | 0.8.1-1 | not yet assigned | Not reported | Not reported |
| Debian | ruby-websocket-driver | source | forky | 0.8.1-1 | not yet assigned | Not reported | Not reported |
| Debian | ruby-websocket-driver | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | ruby-websocket-driver | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Rubygems | websocket-driver | rubygems | Not reported | 0.8.1 | Not reported | GHSA-GHHP-3QVG-889P | Not reported |
| Cpe | websocket-driver | cpe | Not reported | 0.8.1 | Not reported | NVD-CVE-2026-54463 | Not reported |
Notes
[trixie] ruby-websocket-driver: Minor issue [bookworm] ruby-websocket-driver: Minor Issue; DoS
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [ruby-websocket-driver]Affected
Source package: [ruby-websocket-driver]
Details (2)
0.6.3-3+b5· amd64 · bookwormAffected
nvd · ruby-websocket-driver · debian · bookworm; nvd · ruby-websocket-driver · debian · 12
0.6.3-3+b5· arm64 · bookwormAffected
nvd · ruby-websocket-driver · debian · bookworm; nvd · ruby-websocket-driver · debian · 12
[Debian 13 (Trixie)]
- [ruby-websocket-driver]Affected
Source package: [ruby-websocket-driver]
Details (2)
0.6.3-3+b8· amd64 · trixieAffected
nvd · ruby-websocket-driver · debian · 13
0.6.3-3+b9· arm64 · trixieAffected
nvd · ruby-websocket-driver · debian · 13
Observed:
References
- [https://github.com/advisories/GHSA-ghhp-3qvg-889p]
- [https://github.com/faye/websocket-driver-ruby/commit/d0141f041f6e3677a951255d547a313e732ccbe0]
- [https://github.com/faye/websocket-driver-ruby/security/advisories/GHSA-ghhp-3qvg-889p]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-54463]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-54463]
- [https://security-tracker.debian.org/tracker/CVE-2026-54463]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54463.json]
[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]