# CVE-2026-94373: MISP DOM-based XSS in contextual menu component

Source: https://junglewise.ai/threats/cve-2026-94373-misp-contains-a-dom-based-cross-site-scripting-xss-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-21. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-94373 · Severity: info · Published 2026-09-21

MISP is an open-source threat intelligence platform used by security teams to share malware and attack indicators. A DOM-based cross-site scripting vulnerability in the contextual menu feature allows an attacker to inject malicious scripts that execute in the browser, potentially enabling session hijacking, data theft, or unauthorized actions on behalf of authenticated users.

Technologies: [Misp](https://junglewise.ai/threats/technologies/misp). Vendors: [Misp](https://junglewise.ai/threats/vendors/misp).

## Quick answers

**Is CVE-2026-94373 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-94373 being exploited in the wild.

**How severe is CVE-2026-94373?** Informational severity, published 21 September 2026.

**Which products and versions are affected?** Misp before 2.5.47.

**Is there a fix for CVE-2026-94373?** A patch was published on 2026-09-21: Fix committed in commit b062698f2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-94373 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-94373?** Check whether you run Misp 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

The ContextualMenu JavaScript class assigns user-controllable values directly to the innerHTML property of HTML option elements, which parses and renders HTML markup. An attacker who can influence data rendered in the contextual menu can inject arbitrary HTML or JavaScript that executes within the MISP application origin with the user's privileges. A fix was committed (b062698) that replaces innerHTML assignment with safer alternatives like textContent.

## Affected products

- MISP MISP before 2.5.47

## Timeline

- 2026-09-21: disclosed
- 2026-09-21: patched: Fix committed in commit b062698f2

## References

- [https://github.com/MISP/MISP/commit/b062698f2](https://github.com/MISP/MISP/commit/b062698f2)

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