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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-90999
StatePUBLISHED
Assignercertcc
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-16 16:17:21 UTC
Updated2026-09-18 17:49:08 UTC
DescriptionSentry 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.005070000 probability, percentile 0.422630000 (date 2026-09-19)

Problem Types: CWE-20 | CWE-74 | CWE-94 | CWE-116 | CWE-913 | CWE-20 Improper Input Validation | CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | CWE-116 Improper Encoding or Escaping of Output | CWE-94 Improper Control of Generation of Code ('Code Injection') | CWE-913 Improper Control of Dynamically-Managed Code Resources | CWE-20 CWE-20 Improper Input Validation | CWE-74 CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | CWE-116 CWE-116 Improper Encoding or Escaping of Output | CWE-94 CWE-94 Improper Control of Generation of Code ('Code Injection') | CWE-913 CWE-913 Improper Control of Dynamically-Managed Code Resources

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Functional Software Inc. Sentry Seer affected Web site Not specified

References

ReferenceSourceLinkTags
kb.cert.org/vuls/id/212479 [email protected] kb.cert.org
www.kb.cert.org/vuls/id/212479 af854a3a-2127-422b-91ae-364da2661108 www.kb.cert.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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