CVE-2025-10280 is a Cross-Site Scripting (XSS) vulnerability classified under CWE-79 affecting SailPoint Technologies' IdentityIQ versions 8.3, 8.4 (including patch levels prior to 8.4p4), and 8.5. The vulnerability stems from certain IdentityIQ web services that provide non-HTML content but can be accessed through URL paths that cause the Content-Type header to be set incorrectly to 'text/html'. This misconfiguration leads browsers to interpret the response as HTML content, which is not properly escaped or sanitized, allowing malicious scripts embedded in the response to execute in the context of the victim's browser. The CVSS v3.1 score is 7.1, indicating high severity, with attack vector as network (remote), attack complexity high, privileges required low, user interaction required, and impacts on confidentiality, integrity, and availability all rated high. Exploitation requires a low-privilege user to interact with a crafted URL, which could lead to session hijacking, credential theft, or unauthorized actions within the IdentityIQ environment. Although no known exploits are currently reported in the wild, the vulnerability poses a significant risk due to the sensitive nature of identity governance data managed by IdentityIQ. The flaw affects multiple versions, including 8.3, 8.4, and 8.5, highlighting the need for immediate attention from organizations using these versions. The vulnerability was publicly disclosed on November 3, 2025, with no official patches linked yet, emphasizing the importance of interim mitigations.

For European organizations, the impact of CVE-2025-10280 is considerable given the critical role SailPoint IdentityIQ plays in identity governance and administration. Successful exploitation could allow attackers to execute arbitrary scripts in users' browsers, leading to theft of authentication tokens, session hijacking, or manipulation of identity data. This could compromise sensitive personal data protected under GDPR, leading to regulatory penalties and reputational damage. The integrity of identity and access management processes could be undermined, potentially allowing unauthorized access to critical systems. Availability could also be affected if attackers disrupt services or escalate privileges through chained attacks. Organizations in sectors such as finance, healthcare, government, and critical infrastructure, which heavily rely on IdentityIQ for compliance and security, face heightened risks. The requirement for user interaction and low privilege reduces but does not eliminate the threat, especially in environments with many users and complex workflows. The absence of known exploits in the wild provides a window for proactive defense but should not lead to complacency.

1. Monitor SailPoint's official channels for patches addressing CVE-2025-10280 and apply them promptly once available. 2. Until patches are released, restrict access to IdentityIQ web services to trusted networks and authenticated users only, using network segmentation and firewall rules. 3. Implement strict Content Security Policies (CSP) on IdentityIQ web interfaces to limit the execution of unauthorized scripts. 4. Conduct thorough input validation and output encoding on any custom integrations or extensions interacting with IdentityIQ web services. 5. Educate users about the risks of clicking on unsolicited or suspicious links related to IdentityIQ. 6. Enable and review detailed logging and monitoring for unusual access patterns or error messages indicative of attempted exploitation. 7. Consider deploying Web Application Firewalls (WAF) with rules tailored to detect and block XSS attack vectors targeting IdentityIQ endpoints. 8. Review and minimize privileges for users interacting with IdentityIQ to reduce the impact of potential exploitation. 9. Perform regular security assessments and penetration testing focusing on IdentityIQ interfaces to identify and remediate similar vulnerabilities.