CVE-2025-68268 is a reflected Cross-Site Scripting (XSS) vulnerability categorized under CWE-79, discovered in JetBrains TeamCity versions before 2025.11.1. The vulnerability exists on the storage settings page, where user-supplied input is improperly sanitized or encoded, allowing malicious script injection that is reflected back to the user's browser. This flaw can be exploited remotely without authentication, requiring only that a victim user interacts with a crafted URL or malicious link. The CVSS 3.1 score of 5.4 indicates a medium severity level, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The impact affects confidentiality and integrity to a limited extent, as attackers could steal session cookies, perform actions on behalf of the user, or conduct phishing attacks within the context of the TeamCity web interface. There is no impact on availability. No public exploits have been reported yet, but the presence of this vulnerability in a widely used continuous integration tool poses a risk to software development pipelines. JetBrains has reserved the CVE and is expected to release a patch in version 2025.11.1. Until then, organizations should be cautious about exposing TeamCity interfaces to untrusted networks and monitor for suspicious requests targeting the storage settings page. The vulnerability highlights the importance of proper input validation and output encoding in web applications, especially in administrative interfaces.

For European organizations, the impact of CVE-2025-68268 could be significant in environments where TeamCity is used extensively for software build and deployment automation. Exploitation could lead to session hijacking or unauthorized actions within the TeamCity interface, potentially compromising build integrity or leaking sensitive configuration data. This could disrupt development workflows, introduce malicious code into software builds, or expose credentials and tokens stored or accessible via TeamCity. Given the collaborative nature of software development, attackers might leverage this vulnerability to pivot into internal networks or escalate privileges. The medium severity rating suggests that while the vulnerability is not critical, it still poses a tangible risk, especially if combined with social engineering or other attack vectors. Organizations with publicly accessible TeamCity instances or insufficient network segmentation are at higher risk. The lack of known exploits in the wild currently reduces immediate threat but does not eliminate the risk of future exploitation.

1. Upgrade TeamCity to version 2025.11.1 or later as soon as the patch is released by JetBrains to address the reflected XSS vulnerability. 2. Until patching is possible, restrict access to the TeamCity web interface, especially the storage settings page, by implementing network-level controls such as VPNs, IP whitelisting, or firewall rules to limit exposure to trusted users only. 3. Employ Web Application Firewalls (WAFs) with rules designed to detect and block reflected XSS attack patterns targeting TeamCity URLs. 4. Educate users and administrators about the risks of clicking on suspicious links related to TeamCity, emphasizing caution with URLs that could contain malicious scripts. 5. Monitor web server and application logs for unusual requests or patterns indicative of attempted XSS exploitation, particularly targeting the storage settings page. 6. Review and enhance input validation and output encoding practices in any custom plugins or integrations with TeamCity to prevent similar vulnerabilities. 7. Consider implementing Content Security Policy (CSP) headers to reduce the impact of potential XSS attacks by restricting script execution sources.