# CVE-2026-48070: Docmost arbitrary file deletion in avatar cleanup on local storage

Source: https://junglewise.ai/threats/cve-2026-48070-docmost-is-open-source-collaborative-wiki-and-documentation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-24. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-48070 · Severity: high · CVSS 7.1 · Published 2026-09-24

Docmost is an open-source wiki and documentation platform. Authenticated users can store malicious avatar file paths that bypass directory restrictions, allowing arbitrary deletion of files accessible to the Docmost service account during cleanup operations. This can lead to data loss, system instability, or service outages on locally-stored deployments.

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

## Quick answers

**Is CVE-2026-48070 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-48070 being exploited in the wild.

**How severe is CVE-2026-48070?** High severity, with a CVSS score of 7.1, published 24 September 2026.

**Which products and versions are affected?** Docmost before 0.80.1.

**Is there a fix for CVE-2026-48070?** A patch was published on 2026-04-22: Fix committed to main branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-48070 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-48070?** Check whether you run Docmost 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 vulnerability exists in Docmost versions before 0.80.1 where avatar cleanup routines fail to confine avatarUrl values to the intended storage directory. Authenticated attackers can craft malicious avatarUrl values that escape the intended directory structure, enabling arbitrary file or directory deletion on local-storage deployments. The fix was implemented in version 0.80.1.

## Affected products

- Docmost Docmost before 0.80.1

## Timeline

- 2026-09-24: disclosed
- 2026-04-22: patched: Fix committed to main branch

## References

- [https://github.com/docmost/docmost/commit/a573acedd0317f3472cb0f8b95f6aa15315312e5](https://github.com/docmost/docmost/commit/a573acedd0317f3472cb0f8b95f6aa15315312e5)
- [https://github.com/docmost/docmost/releases/tag/v0.80.1](https://github.com/docmost/docmost/releases/tag/v0.80.1)

## 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)