CVE-2026-90999

CRITICAL CVSS 3.1: 9.8 EPSS 0.67%
Updated Sep 18, 2026
Sentry
Parameter Value
CVSS 9.8 (CRITICAL)
Type CWE-20 (Improper Input Validation), CWE-116 (Improper Encoding or Escaping of Output), CWE-74 (Injection), CWE-913, CWE-94 (Code Injection)
Vendor Sentry
Public PoC No

Sentry Seer is vulnerable to a multi-stage trust-boundary violation that allows unauthenticated attacker-controlled telemetry to become code that is executed by an agent in a privileged automation environment. An external attacker can submit fabricated Sentry events without having access to the victim’s Sentry account, source repository, or infrastructure.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1