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CVE-2026-111094

9.8, critical

JetBrains TeamCity Deserialization of Untrusted Data Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
9.8, critical critical CVSS v3.1
EPSS, next 30 days
0.4% higher than 30.5% of scored CVEs
Exploitation
No public evidence
Published
15 Oct 20262 days ago

Description

In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 remote code execution via a whitelist bypass in the build messages protocol was possible

Details

Vendor
JetBrains
Product
TeamCity
Weakness
CWE-502 (opens in a new tab)
Status
Analyzed
Updated
16 Oct 2026
Assigner
cve@jetbrains.com

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

References 1

Advisories 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other JetBrains CVEs

Every JetBrains CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-63077 JetBrains TeamCity Deserialization of Untrusted Data Vulnerability KEV EPSS 90% 9.8, critical
  • CVE-2024-27198 JetBrains TeamCity Authentication Bypass Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2024-27199 JetBrains TeamCity Relative Path Traversal Vulnerability KEV EPSS 100% 7.3, high
  • CVE-2023-42793 JetBrains TeamCity Authentication Bypass Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2026-106218 In JetBrains TeamCity before 2026.1.3 2025.11.7 kotlin DSL sandbox escape leading to RCE on the server was possible EPSS 0.3% 10, critical
  • CVE-2026-106219 JetBrains TeamCity External Control of File Name or Path Vulnerability EPSS 0.6% 7.5, high
  • CVE-2026-100255 In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 administrator account takeover was possible via password reset EPSS 0.4% 9.8, critical
  • CVE-2026-100273 JetBrains YouTrack Incorrect Authorization Vulnerability EPSS 0.3% 9.8, critical

Beyond this page

Is CVE-2026-111094 in your network?

This page tells you how dangerous CVE-2026-111094 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-111094 comes with the devices to patch.

    Learn more about EXYS7600 OCELOT

  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.