CVE-2026-81730 — dolibarr / dolibarr_erp/crm
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Dolibarr 9.0.0 through 23.0.4 saves inbound email attachments under the name supplied in the message's MIME headers without reducing it to a safe basename. The global saveAttachment() in htdocs/emailcollector/lib/emailcollector.lib.php builds $filepath = $path . $filename . '.' . $ext and hands it to file_put_contents(), and the private saveAttachment() in htdocs/emailcollector/class/emailcollector.class.php writes to $destdir.'/'.$filename; the name reaches both from the attachment's own getName() or getFilename() value by way of the record-join, create-ticket and create-project operations. A traversal sequence in the filename therefore survives intact, so any sender who can email a mailbox that an EmailCollector monitors, which is the module's ordinary use for a support or ticket inbox, can place attacker-controlled content outside the per-object attachment directory without holding a Dolibarr account. Under the hardened layout Dolibarr's SECURITY.md requires, with htdocs read-only, the write is confined to the documents tree and corrupts or forges other objects' documents; where htdocs is writable the same primitive reaches a web-executable path. Version 24.0.0 applies dol_sanitizePathName() and dol_sanitizeFileName() before the write.
| Software | Affected versions |
|---|---|
| dolibarr / dolibarr_erp/crm | >= 9.0.0, < 24.0.0 |
- https://github.com/Dolibarr/dolibarr
- https://github.com/Dolibarr/dolibarr/blob/23.0.4/htdocs/emailcollector/lib/emailcollector.lib.php#L187
- https://github.com/Dolibarr/dolibarr/commit/264a44defb5e438689c75679617f6edc4c038abc
- https://www.vulncheck.com/advisories/dolibarr-9.0.0-through-23.0.4-path-traversal-via-emailcollector-attachment-filename
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A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
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Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
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