# CVE-2026-85389: Worklenz task API authorization bypass

Source: https://junglewise.ai/threats/cve-2026-85389-worklenz-task-api-authorization-bypass  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-03. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-85389 · Severity: medium · CVSS 6.5 · Published 2026-09-03

Worklenz is a project management tool used by teams to collaborate on tasks and projects. A flaw in versions before 3.0.0 fails to properly verify that users can only access tasks belonging to their organization, allowing authenticated attackers to view confidential work logs, comments, attachments, and project insights from other organizations by simply querying task endpoints with arbitrary identifiers.

Technologies: [Worklenz](https://junglewise.ai/threats/technologies/worklenz). Vendors: [Worklenz](https://junglewise.ai/threats/vendors/worklenz).

## Quick answers

**Is CVE-2026-85389 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-85389 being exploited in the wild.

**How severe is CVE-2026-85389?** Medium severity, with a CVSS score of 6.5, published 3 September 2026.

**Which products and versions are affected?** Worklenz before 3.0.0.

**Is there a fix for CVE-2026-85389?** A patch was published on 2026: Fix available in version 3.0.0 and later Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-85389 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-85389?** Check whether you run Worklenz 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

This is an authorization bypass vulnerability in Worklenz's task-scoped API endpoints. The application fails to verify task ownership against the authenticated user's organization when processing requests to task-related endpoints. An authenticated attacker can craft requests with arbitrary task UUIDs to retrieve sensitive data (work logs, comments, attachments, project insights) belonging to other tenants. The vulnerability requires authentication but no special privileges, and the fix is available in version 3.0.0 and later via a verify-task-access middleware implementation.

## Affected products

- Worklenz Worklenz before 3.0.0

## Timeline

- 2026-09-03: disclosed
- 2026: patched: Fix available in version 3.0.0 and later

## References

- [https://github.com/Worklenz/worklenz](https://github.com/Worklenz/worklenz)
- [https://github.com/Worklenz/worklenz/blob/v3.0.0/worklenz-backend/src/middlewares/verify-task-access.ts](https://github.com/Worklenz/worklenz/blob/v3.0.0/worklenz-backend/src/middlewares/verify-task-access.ts)

## Related threats

- [Worklenz SQL injection in reporting members endpoints](https://junglewise.ai/threats/cve-2026-104060-worklenz-before-3-3-0-contains-an-sql-injection-vulnerability-in)
- [Worklenz SQL injection in sort-field pagination parameter](https://junglewise.ai/threats/cve-2026-85388-worklenz-sql-injection-in-sort-field-pagination-parameter)