PT-2026-60378 · Rubygems · Websocket-Driver

CVE-2026-54463 · Publicado 2026-07-15 · Atualizado 2026-07-15

OSV

CVSS v4.0

6.9

Média

Vetor base

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

Impact

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 server or client can make the other peer parse these bytes into an ever-growing integer. Since Ruby integers are arbitrary precision, this can be used to make a WebSocket connection consume an unbounded amount of memory and lead to the host process running out of memory.

Patches

The issue has been patched in version 0.8.1. All users should upgrade to this version.

Workarounds

No known workarounds exist.

Acknowledgements

This issue was discovered and reported by Pranjali Thakur, DepthFirst Security Research Team.

Exploit

Correção

Resource Exhaustion

Enumeração de Fraquezas

CWE-400

Identificadores relacionados

CVE-2026-54463

GHSA-GHHP-3QVG-889P

Produtos afetados

Websocket-Driver

Referências · 6

• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/websocket-driver/CVE-2026-54463.yml · Exploit
• https://github.com/faye/websocket-driver-ruby · Nota
• https://github.com/faye/websocket-driver-ruby/security/advisories/GHSA-ghhp-3qvg-889p · Nota
• https://github.com/faye/websocket-driver-ruby/releases/tag/0.8.1 · Nota
• https://cve.org/CVERecord/SearchResults?query=CVE-2026-54463 · Nota de Segurança
• https://osv.dev/vulnerability/GHSA-ghhp-3qvg-889p · Aviso do Fabricante