# CVE-2026-17209: IBM Db2 Mirror for i cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-17209-ibm-db2-mirror-for-i-cross-site-scripting  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-14. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-17209 · Severity: medium · CVSS 6.3 · Published 2026-08-14

IBM Db2 Mirror for i is a database management tool used by organizations to monitor and manage Db2 databases on IBM i systems. The vulnerability allows an authenticated attacker to inject malicious scripts that execute in the context of another user's browser session when they interact with the GUI, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim.

Technologies: [IBM Db2 Mirror For I](https://junglewise.ai/threats/technologies/db2-mirror-for-i). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-17209 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-17209 being exploited in the wild.

**How severe is CVE-2026-17209?** Medium severity, with a CVSS score of 6.3, published 14 August 2026.

**Which products and versions are affected?** IBM Db2 Mirror For I 7.4, 7.5, 7.6.

**Is there a fix for CVE-2026-17209?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-17209 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-17209?** Check whether you run IBM Db2 Mirror For I at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This is a reflected or stored cross-site scripting (XSS) vulnerability in IBM Db2 Mirror for i's web GUI (CWE-79), where user input is not properly neutralized during web page generation. The vulnerability requires authentication to the system and user interaction (clicking a malicious link or opening a crafted page), but allows an attacker to execute arbitrary JavaScript in the victim's browser context. An authenticated attacker can craft a malicious request that, when clicked by a targeted user, injects scripts that steal session cookies, perform unauthorized actions, or deface the interface. IBM has published a security bulletin addressing this and multiple related vulnerabilities in versions 7.4, 7.5, and 7.6.

## Affected products

- IBM Db2 Mirror for i 7.4, 7.5, 7.6

## Timeline

- 2026-08-14: disclosed

## References

- [https://www.ibm.com/support/pages/node/7283359](https://www.ibm.com/support/pages/node/7283359)

## Related threats

- [IBM Db2 Mirror for i privilege escalation in GUI](https://junglewise.ai/threats/cve-2026-96012-ibm-db2-mirror-for-i-7-4-7-5-and-7-6-is-vulnerable-to-privilege)
- [IBM Db2 Mirror for i CSRF in GUI](https://junglewise.ai/threats/cve-2026-17047-ibm-db2-mirror-for-i-csrf-in-gui)
- [IBM Db2 Mirror for i improper authorization in SQL procedure](https://junglewise.ai/threats/cve-2026-17483-ibm-db2-mirror-for-i-improper-authorization-in-sql-procedure)
- [IBM Db2 Mirror for i out-of-bounds read denial of service](https://junglewise.ai/threats/cve-2026-16660-ibm-db2-mirror-for-i-out-of-bounds-read-denial-of-service)
- [IBM Db2 Mirror for i race condition in Unix domain socket path](https://junglewise.ai/threats/cve-2026-18567-ibm-db2-mirror-for-i-race-condition-in-unix-domain-socket-path)