# CVE-2026-63171: Omnispace Agora Project stored cross-site scripting in forum

Source: https://junglewise.ai/threats/cve-2026-63171-omnispace-agora-project-before-26-10-0-contains-a-stored-cross  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-63171 · Severity: medium · CVSS 5.4 · Published 2026-10-13

Agora Project is a collaborative workspace platform used for team communication, file sharing, and project management. An authenticated attacker can inject malicious scripts into forum category descriptions, which are then executed when other users view the forum, potentially allowing account takeover or data theft.

Technologies: [Omnispace Agora Project](https://junglewise.ai/threats/technologies/agora-project). Vendors: [Omnispace](https://junglewise.ai/threats/vendors/omnispace).

## Quick answers

**Is CVE-2026-63171 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-63171 being exploited in the wild.

**How severe is CVE-2026-63171?** Medium severity, with a CVSS score of 5.4, published 13 October 2026.

**Which products and versions are affected?** Omnispace Agora Project before 26.10.0.

**Is there a fix for CVE-2026-63171?** Yes: fixed in 26.10.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-63171 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-63171?** Check whether you run Omnispace Agora Project 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.

## How to fix

- Fixed in 26.10.0

## Technical details

A stored cross-site scripting vulnerability in Agora Project before version 26.10.0 allows authenticated users to break out of an HTML input value attribute by submitting a double-quote character in a forum category description. The vulnerability exists because HTMLPurifier is configured to preserve double-quotes, enabling attackers to escape the attribute context and inject arbitrary JavaScript. The injected script persists and executes in the browsers of users viewing the affected forum category.

## Affected products

- Omnispace Agora Project before 26.10.0

## Timeline

- 2026-10-13: advisory

## References

- [https://github.com/xech/agora-project/releases/tag/26.10](https://github.com/xech/agora-project/releases/tag/26.10)
- [https://www.agora-project.net/](https://www.agora-project.net/)

## Related threats

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- [Omnispace Agora Project stored cross-site scripting in LDAP import](https://junglewise.ai/threats/cve-2026-63168-omnispace-agora-project-before-26-10-0-contains-a-stored-cross)
- [Omnispace Agora Project stored cross-site scripting in Links module](https://junglewise.ai/threats/cve-2026-63157-omnispace-agora-project-before-26-10-0-contains-a-stored-cross)
- [Omnispace Agora Project reflected XSS in visioUrl parameter](https://junglewise.ai/threats/cve-2026-63156-omnispace-agora-project-before-26-10-0-contains-a-reflected-cross)
- [Omnispace Agora Project broken access control in user assignment](https://junglewise.ai/threats/cve-2026-63174-omnispace-agora-project-before-26-10-0-contains-a-broken-access)