# CVE-2026-9056: Qlik Talend Administration Center stored XSS in server management

Source: https://junglewise.ai/threats/cve-2026-9056-qlik-talend-administration-center-stored-xss-in-server-management  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-20. Updated: 2026-05-20  
License: CC BY 4.0 with a link back

CVE-2026-9056 · Severity: medium · CVSS 5.4 · Published 2026-05-20

A security vulnerability exists in the Talend Administration Center, a management console used for administering data integration tasks. An authorized user with server management permissions can inject malicious scripts into the system. If another user views the affected area, these scripts could execute in their browser, potentially allowing the attacker to perform actions on their behalf or access sensitive session information.

Vendors: [Qlik](https://junglewise.ai/threats/vendors/qlik).

## Quick answers

**Is CVE-2026-9056 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9056 being exploited in the wild.

**How severe is CVE-2026-9056?** Medium severity, with a CVSS score of 5.4, published 20 May 2026.

**Which products and versions are affected?** Qlik Talend Administration Center Before Patch_20260123_QTAC-1883 (v8.0.1).

**Is there a fix for CVE-2026-9056?** A patch was published on 2026-01-23: Patch QTAC-1883 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-9056 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-9056?** Check whether you run Qlik Talend Administration Center 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

A stored cross-site scripting (XSS) vulnerability exists in the server management component of Qlik Talend Administration Center. The flaw is caused by insufficient input validation and output encoding of server configuration or management data. An attacker with low-privileged access (specifically 'permission to manage servers') can submit a malicious payload that is permanently stored on the server. When a different user, such as an administrator, interacts with the compromised interface, the payload executes in the context of their browser session. This can lead to session hijacking or unauthorized actions within the management console. The issue is resolved in Patch_20260123_QTAC-1883 for version 8.0.1.

## Affected products

- Qlik Talend Administration Center Before Patch_20260123_QTAC-1883 (v8.0.1)

## Timeline

- 2026-01-23: patched: Patch QTAC-1883 released
- 2026-05-07: advisory: Qlik support article updated
- 2026-05-20: disclosed: CVE-2026-9056 published to NVD

## References

- [https://community.qlik.com/t5/Official-Support-Articles/Security-fix-for-Qlik-Talend-Administration-Center-cross-site/ta-p/2548522](https://community.qlik.com/t5/Official-Support-Articles/Security-fix-for-Qlik-Talend-Administration-Center-cross-site/ta-p/2548522)

## Related threats

- [Qlik Talend Administration Center broken access control in update URL](https://junglewise.ai/threats/cve-2026-9057-qlik-talend-administration-center-broken-access-control-in-update)