# CVE-2026-40927: Docmost is open-source collaborative wiki and documentation software. Prior to 0.80.0, when leaving a comment on a…

Source: https://junglewise.ai/threats/cve-2026-40927-docmost-is-open-source-collaborative-wiki-and-documentation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-21  
License: CC BY 4.0 with a link back

CVE-2026-40927 · Severity: medium · CVSS 5.4 · Published 2026-04-21

Docmost is open-source collaborative wiki and documentation software. Prior to 0.80.0, when leaving a comment on a page, it is possible to include a JavaScript URI as the link. When a user clicks on the link the JavaScript executes. This vulnerability is fixed in 0.80.0.

Technologies: [Docmost](https://junglewise.ai/threats/technologies/docmost). Vendors: [Docmost](https://junglewise.ai/threats/vendors/docmost).

## Quick answers

**Is CVE-2026-40927 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40927 being exploited in the wild.

**How severe is CVE-2026-40927?** Medium severity, with a CVSS score of 5.4, published 21 April 2026.

**Which products and versions are affected?** Docmost. The advisory does not name versions.

**Is there a fix for CVE-2026-40927?** 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.

**Am I affected by CVE-2026-40927?** Check whether you run Docmost. 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.

## Affected products

- Docmost

## Related threats

- [Docmost ZIP bomb in page-import feature](https://junglewise.ai/threats/cve-2026-65827-docmost-is-open-source-collaborative-wiki-and-documentation)
- [Docmost privilege escalation in workspace invitation](https://junglewise.ai/threats/cve-2026-52853-docmost-is-open-source-collaborative-wiki-and-documentation)
- [Docmost access control bypass in transclusion API](https://junglewise.ai/threats/cve-2026-52850-docmost-is-open-source-collaborative-wiki-and-documentation)
- [Docmost authorization bypass in page export](https://junglewise.ai/threats/cve-2026-48073-docmost-is-open-source-collaborative-wiki-and-documentation)
- [Docmost path traversal in avatar and logo endpoint](https://junglewise.ai/threats/cve-2026-48072-docmost-is-open-source-collaborative-wiki-and-documentation)