Get real-time updates on Telegram
P5
CVE-2026-67431: ruby-sdk < 0.23.0
CVE-2026-67431. EPSS 0.0048 (percentile 0.40449), scored 22-Oct-2026.
Affected technology
ruby-sdk · < 0.23.0
modelcontextprotocol
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required
What an attacker can do
An attacker with a stolen session ID can send tools/call requests that execute in the victim's session. Vendor/CNA’s CVSS 4.0 assessment (base score 8.3/10) rates confidentiality impact as none; integrity impact as high; availability impact as low.
- CWE
- CWE-284
- CCR priority
- 0.1 /100 (P5)
- EPSS
- 0.0048 · percentile 0.40517 · 2026-10-24
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-24 15:07:27.951960+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-67431.html