CVE-2026-59794Network attack vector

Authenticated script execution via stored agent data

Published Jul 10, 2026 · Updated Jul 10, 2026

Stored XSS on the cloud profile page in JetBrains TeamCity On-Premises before 2026.1.2 allows remote authenticated users to execute script. Agent-reported data supplies the stored payload, but JetBrains has not disclosed the affected renderer or the exact neutralization failure. The attack requires control of agent-reported data and a user to open the page; execution occurs in that viewer's browser context.

CVSS severity7.3
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS on the cloud profile page in JetBrains TeamCity On-Premises before 2026.1.2 allows remote authenticated users to execute script. Agent-reported data supplies the stored payload, but JetBrains has not disclosed the affected renderer or the exact neutralization failure. The attack requires control of agent-reported data and a user to open the page; execution occurs in that viewer's browser context.

The record

CVE
CVE-2026-59794
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
JetBrains
Product
TeamCity On-Premises
Classifications
CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

JetBrains · TeamCity On-Premisesversion=0 <2026.1.2

Published CVSS scores

7.3JetBrainsCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo