VulnerabilityPublished 16 Dec 2025

CVE-2025-68163: JetBrains TeamCity · Cross-site Scripting

Affects JetBrains TeamCitySource CVE Database V5

Not known to be exploited · CVSS 3.5 Low.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score

3.5Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
User Interaction: Required
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 16 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
JetBrains TeamCity	Affected =0	Fixed in–

AI-suggested

To mitigate CVE-2025-68163, European organizations should implement the following specific measures: 1) Restrict access to the agentpushInstall page to only trusted administrators and users with a legitimate need, minimizing exposure. 2) Enforce strong authentication and session management policies to reduce the risk of credential compromise. 3) Monitor TeamCity logs and user activity for unusual behavior indicative of attempted exploitation. 4) Educate administrators and users about the risks of stored XSS and the importance of cautious interaction with potentially untrusted inputs. 5) Apply input validation and output encoding controls where possible within custom TeamCity configurations or plugins. 6) Stay informed about JetBrains security advisories and apply patches promptly once released. 7) Consider deploying Web Application Firewalls (WAFs) with rules to detect and block XSS payloads targeting TeamCity endpoints. 8) Regularly audit and update TeamCity instances to the latest secure versions to minimize exposure to known vulnerabilities.

Description

CVE-2025-68163 is a stored Cross-Site Scripting (XSS) vulnerability in JetBrains TeamCity versions prior to 2025.11, specifically on the agentpushInstall page. The vulnerability allows an attacker with high privileges and requiring user interaction to inject malicious scripts that are stored and executed in the context of other users. The CVSS score is 3.5 (low severity) due to the requirement of privileges and user interaction, and the limited impact on confidentiality and integrity. No known exploits are currently in the wild. European organizations using TeamCity should be aware of this vulnerability and apply updates once available. The threat primarily affects development and CI/CD environments where TeamCity is deployed. Mitigation involves restricting access to the affected page, monitoring for suspicious activity, and applying patches when released. Countries with significant software development sectors and high adoption of JetBrains tools, such as Germany, France, and the UK, are more likely to be impacted.

Impact

For European organizations, the impact of CVE-2025-68163 is primarily on the security of development pipelines and build environments. Compromise of TeamCity through stored XSS could allow attackers to hijack user sessions, escalate privileges, or inject malicious code into build processes, potentially leading to supply chain attacks or unauthorized access to sensitive source code and build artifacts. Although the severity is low, organizations with critical software development operations could face reputational damage, intellectual property theft, or disruption of development workflows. The requirement for high privileges and user interaction reduces the likelihood of widespread exploitation, but insider threats or compromised credentials could increase risk. Organizations in sectors such as finance, telecommunications, and technology in Europe, which rely heavily on CI/CD tools, may be particularly concerned about this vulnerability.

Summary

CVE-2025-68163 is a stored Cross-Site Scripting (XSS) vulnerability identified in JetBrains TeamCity, a popular continuous integration and build management system. The vulnerability exists on the agentpushInstall page in versions prior to 2025.11. Stored XSS occurs when malicious input is saved by the application and later rendered in a way that executes scripts in the browsers of other users. In this case, an attacker with high privileges (PR:H) and requiring user interaction (UI:R) can inject malicious JavaScript code that will execute when other users access the affected page. The CVSS vector indicates the attack can be performed remotely over the network (AV:N) with low attack complexity (AC:L), but requires authentication and user interaction, limiting the attack surface. The impact on confidentiality and integrity is low (C:L, I:L), with no impact on availability (A:N). This vulnerability could allow attackers to steal session tokens, perform actions on behalf of users, or manipulate the user interface, potentially leading to further exploitation within the CI/CD environment. No public exploits are known at this time, and JetBrains has not yet released a patch. The vulnerability is classified under CWE-79, which covers improper neutralization of input leading to XSS.

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #1OWASP Top 10 A05:2025: Injection (opens in a new tab)
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.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Implementation · Architecture and Design
Understand the context in which your data will be used and the encoding that will be expected. This is especially important when transmitting data between different components, or when generating outputs that can contain multiple encodings at the same time, such as web pages or multi-part mail messages.
Architecture and Design · Implementation · Attack Surface Reduction
Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide…
OWASP Cheat Sheets
Cross Site Scripting Prevention (opens in a new tab)
DOM based XSS Prevention (opens in a new tab)
Injection Prevention (opens in a new tab)
Abuse Case (opens in a new tab)
Deserialization (opens in a new tab)
OWASP ASVS 4.0.3
V5.3.3 (opens in a new tab)
V1.5.1 (opens in a new tab)
Attack patterns
XSS Using MIME Type Mismatch (opens in a new tab)
DOM-Based XSS (opens in a new tab)
Reflected XSS (opens in a new tab)
Stored XSS (opens in a new tab)
Cross-Site Scripting (XSS) (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

jetbrains.com/privacy-security/issues-fixed/ (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 23 Dec 2025, 15:58 UTC

WeaknessesCWE-79

Technical details

References

Community reviews

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