# CVE-2026-18541: IBM Planning Analytics stored cross-site scripting in Web UI

Source: https://junglewise.ai/threats/cve-2026-18541-ibm-planning-analytics-2-0-and-2-1-is-vulnerable-to-stored-cross  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-12. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-18541 · Severity: medium · CVSS 6.4 · Published 2026-10-12

IBM Planning Analytics is a business analytics and planning platform that supports enterprise decision-making. The vulnerability allows authenticated users to inject malicious JavaScript code into the Web UI, which persists and affects all users who view the affected content. An attacker can steal session credentials or alter application behavior for trusted users.

Technologies: [IBM Planning Analytics](https://junglewise.ai/threats/technologies/planning-analytics). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-18541 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18541 being exploited in the wild.

**How severe is CVE-2026-18541?** Medium severity, with a CVSS score of 6.4, published 12 October 2026.

**Which products and versions are affected?** IBM Planning Analytics 2.0, 2.1.

**Is there a fix for CVE-2026-18541?** 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-2026-18541 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-18541?** Check whether you run IBM Planning Analytics 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 stored XSS vulnerability in IBM Planning Analytics Web UI where an authenticated attacker can embed arbitrary JavaScript that executes in the context of other users' browsers. The vulnerability requires prior authentication to the application. Once injected, the malicious script persists and runs for all users viewing the compromised page, enabling credential theft or session hijacking.

## Affected products

- IBM Planning Analytics 2.0, 2.1

## Timeline

- 2026-10-12: disclosed

## References

- [https://www.ibm.com/support/pages/node/7291604](https://www.ibm.com/support/pages/node/7291604)

## Related threats

- [IBM Planning Analytics stack-based buffer overflow in TM1 OData engine](https://junglewise.ai/threats/cve-2026-76587-ibm-planning-analytics-2-0-and-2-1-are-vulnerable-to-a-stack)
- [IBM Planning Analytics stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-85457-ibm-planning-analytics-2-0-and-2-1-could-allow-a-remote)
- [IBM Planning Analytics cross-site scripting in JavaScript output encoding](https://junglewise.ai/threats/cve-2026-75063-ibm-planning-analytics-2-0-and-2-1-could-allow-a-remote)
- [IBM Planning Analytics path traversal in workspace component](https://junglewise.ai/threats/cve-2026-75061-ibm-planning-analytics-2-0-and-2-1-could-allow-a-remote-attacker)
- [IBM Planning Analytics path validation bypass](https://junglewise.ai/threats/cve-2026-19627-ibm-planning-analytics-2-0-and-2-1-could-allow-a-remote-attacker)