CVE-2026-90999CWE-116CWE-20CWE-74CWE-913CWE-94code-injection

CVE-2026-90999

Critical · published September 16, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
51.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00670 · 51.4th percentile
Weaknesses
CWE-116 · Improper Encoding or Escaping of Output; CWE-20 · Improper Input Validation; CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'); CWE-913 · Improper Control of Dynamically-Managed Code Resources; CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-09-16T20:17Z
References (2)
https://kb.cert.org/vuls/id/212479 · [email protected]https://www.kb.cert.org/vuls/id/212479 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 18 SEP 04:02Z
    EPSS moved — → 0%
    epss
  • 16 SEP 15:45Z
    Sentry Seer vulnerability allows attacker-controlled input to be executed in a privileged environment
    cvelistv5