Remote code execution in widely used CI server (JetBrains TeamCity) can allow attackers to run code on servers/agents and compromise build pipelines across organizations.
CVE-2026-111094
RCE in JetBrains TeamCity via build messages whitelist bypass.
Is CVE-2026-111094 being exploited?
Not confirmed. CVE-2026-111094 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.38% probability of exploitation in the next 30 days.
How severe is CVE-2026-111094?
CVE-2026-111094 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-111094?
Yes. A fix has been recorded for CVE-2026-111094. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-111094 affect?
CVE-2026-111094 affects JetBrains TeamCity <2026.2, TeamCity 2026.1.x <2026.1.4, TeamCity 2025.11.x <2025.11.8, TeamCity Server, and 1 further product or version. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-111094?
Upgrade to 2026.2, 2026.1.4 or 2025.11.8 immediately; restrict untrusted build messages.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution on TeamCity server or build agents via a whitelist bypass in the build messages protocol, enabling pipeline and infrastructure compromise.
Immediate action required
- affected< 2026.2, 2026.1.4, 2025.11.8
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.