CVE-2026-106218

CRITICAL

In JetBrains TeamCity before 2026.1.3 2025.11.7 kotlin DSL sandbox escape leading to RCE on the server was possible

Affects 1 product across 1 vendor.

CVSS 3.110.0
EPSS0.3%
Percentile19th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, can impact systems beyond the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-184: CWE-184
Related Attack Patterns (CAPEC)
CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
via CWE-184
CAPEC-43 Exploiting Multiple Input Interpretation Layers
via CWE-184
CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
via CWE-184
CAPEC-85 AJAX Footprinting
via CWE-184
CAPEC-120 Double Encoding
via CWE-184
Show all 9

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

A high severity vulnerability (CVE-2026-106218) affects the target system. In JetBrains TeamCity before 2026.1.3 2025.11.7 kotlin DSL sandbox escape leading to RCE on the server was possible

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Frequently Asked Questions
What is CVE-2026-106218?
A high severity vulnerability (CVE-2026-106218) affects the target system. In JetBrains TeamCity before 2026.1.3 2025.11.7 kotlin DSL sandbox escape leading to RCE on the server was possible
What is the CVSS score for CVE-2026-106218?
CVE-2026-106218 has CVSS 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H. EPSS: 0.3%.
Is CVE-2026-106218 actively exploited?
No confirmed active exploitation of CVE-2026-106218 as of 2026-10-11.
How do I remediate CVE-2026-106218?
Advisory: https://www.jetbrains.com/privacy-security/issues-fixed/
What systems are affected by CVE-2026-106218?
CVE-2026-106218 affects Jetbrains Teamcity.
Vulnerability Details
CVE IDCVE-2026-106218
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published2026-10-06
Last Modified2026-10-08
ICS Relevance0%
Weakness (CWE)
CWE-184
SourceNVD
Official Description

In JetBrains TeamCity before 2026.1.3 2025.11.7 kotlin DSL sandbox escape leading to RCE on the server was possible

Source: NIST NVD / MITRE CVE Database

Affected Products
VendorProductAffected Versions
Jetbrains Teamcity < 2025.11.7 ≥ 2026.1.1, < 2026.1.3
Remediation
View Vendor Advisory →
Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 9 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
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