Sentry Seer vulnerability allows attacker-controlled input to be executed in a privileged environment (CVE-2026-90999) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90999

Sentry Seer vulnerability allows attacker-controlled input to be executed in a privileged environment

Answer in brief

CVE-2026-90999 records a Unknown severity vulnerability in Sentry Seer vulnerability allows attacker-controlled input to be executed in a privileged environment. The current sources do not mark it as known exploited. The current feed maps Functional Software, Inc./Sentry Seer (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 16, 2026Updated Sep 16, 2026Source checked Sep 16, 2026First seen by HOL Sep 16, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Functional Software, Inc./Sentry Seer (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Functional Software, Inc./Sentry Seergeneric	Web site	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Functional Software, Inc./Sentry Seer.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 16, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.