# CVE-2026-81729 — dolibarr

> As of 2026-08-27, CVE-2026-81729 is a MEDIUM-severity vulnerability in dolibarr, CVSS v3.1 6.5, EPSS 0.2% (12.4th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-81729 as of 2026-08-27; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-27

## What is CVE-2026-81729?

Dolibarr before 23.0.4 authorizes REST API document deletion against the wrong permission. Documents::delete() in htdocs/api/class/api_documents.class.php calls dol_check_secure_access_document() with the mode argument 'read' when handling DELETE /api/index.php/documents, while the sibling builddoc() path passes 'write', the correct mode for an operation that modifies stored data. An authenticated API user who holds only a read permission for a document-bearing module, for example societe:lire or facture:lire, and no create, write, delete or admin permission, therefore passes the check and can permanently delete that module's documents: third-party files, invoices, orders, proposals, project files and generated PDFs, with no recovery path. The call site is htdocs/api/class/api_documents.class.php:1276 in 23.0.3 and passes 'write' from 23.0.4 onward.

The record classifies CVE-2026-81729 under weakness class [CWE-863](https://intel.threadlinqs.com/cwe/CWE-863). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 39 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 6.5 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`)
- **CVSS v4.0 base score:** 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 12.4% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-27

## Is CVE-2026-81729 being exploited?

It currently carries a trending score of 32 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **Dolibarr**: dolibarr

## How to fix CVE-2026-81729

No vendor patch reference has been recorded for CVE-2026-81729 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-81729

No threat campaign in the Threadlinqs corpus currently references CVE-2026-81729, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-08-30. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — patch](https://github.com/Dolibarr/dolibarr/commit/de1d7a623e98484cc71fe43e93fdd5cd796abee5)

**Technical analysis**

- [github.com — technical description](https://github.com/Dolibarr/dolibarr/blob/23.0.3/htdocs/api/class/api_documents.class.php#L1276)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/dolibarr-before-23.0.4-incorrect-authorization-on-rest-api-document-deletion)

**Issue tracking and product pages**

- [github.com — product](https://github.com/Dolibarr/dolibarr)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-81729
Full detection coverage and IOCs for threats exploiting CVE-2026-81729 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp