VULNERABILITY INTELLIGENCE

CVE-2026-73059

CVSS score7.1 HIGH
EPSS probability0.38%
CISA KEVNot currently listed
Published2026-08-16
Last modified2026-08-26
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Description

stoatchat before 0.15.0 contains a permission bypass vulnerability in the message_fetch route that checks only ViewChannel permission instead of requiring ReadMessageHistory. Attackers with ViewChannel access but ReadMessageHistory denied can retrieve individual message content by ID, bypassing the intended history restriction enforced by bulk read routes.

Weakness classification

  • CWE-863: Incorrect Authorization

Primary references