CVE-2026-90999

Critical

Description

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.

SeverityCritical

CVSS9.8

Exploit probability—

ProductSentry Seer

PublishedSep 16, 2026

First seenSep 16, 2026

Weakness typeCWE-20Improper input validation CWE-74Injection CWE-116CWE-116 CWE-94Code injection CWE-913CWE-913

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
Functional Software, Inc. Sentry Seer	Web site	—

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