JetBrains TeamCity up to 2026.1.1 Agent Registration cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k0.59

Summaryinfo

A vulnerability, which was classified as problematic, was found in JetBrains TeamCity up to 2026.1.1. This vulnerability affects unknown code of the component Agent Registration. Executing a manipulation can lead to cross site scripting. This vulnerability is tracked as CVE-2026-59795. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in JetBrains TeamCity up to 2026.1.1. It has been declared as problematic. This vulnerability affects some unknown functionality of the component Agent Registration. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

In JetBrains TeamCity before 2026.1.2 stored XSS via unauthenticated agent registration was possible

The advisory is shared for download at jetbrains.com. This vulnerability was named CVE-2026-59795 since 07/07/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 2026.1.2 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: TeamCity 2026.1.2

Timelineinfo

07/07/2026 CVE reserved
07/10/2026 +3 days Advisory disclosed
07/10/2026 +0 days VulDB entry created
07/10/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: jetbrains.com
Status: Confirmed

CVE: CVE-2026-59795 (🔒)
GCVE (CVE): GCVE-0-2026-59795
GCVE (VulDB): GCVE-100-377512

Entryinfo

Created: 07/10/2026 17:36
Changes: 07/10/2026 17:36 (54)
Complete: 🔍
Cache ID: 216::103

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