High (8.0) in hashicorp boundary. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/hashicorp/boundary 0.15.0.
Boundary and Boundary Enterprise (“Boundary”) is vulnerable to session hijacking through TLS certificate tampering. An attacker with privileges to enumerate active or pending sessions, obtain a private key pertaining to a session, and obtain a valid trust on first use (TOFU) token may craft a TLS certificate to hijack an active session and gain access to the underlying service or application.
Severity
CVSS 3.1
8.0 high
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS
0.3% chance of exploitation in the next 30 days; higher than 22% of CVEs (scores of 2026-10-31)