Vulnerability Details CVE-2026-81730
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 30.5%
CVSS Severity
CVSS v3 Score 8.2
Products affected by CVE-2026-81730
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:10.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:10.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:10.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:10.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:10.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:10.0.5
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:10.0.6
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:10.0.7
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:11.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:11.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:11.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:11.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:11.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:11.0.5
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:12.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:12.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:12.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:12.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:12.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:12.0.5
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:13.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:13.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:13.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:13.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:13.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:13.0.5
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:14.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:14.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:14.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:14.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:14.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:14.0.5
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:15.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:15.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:15.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:15.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:16.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:16.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:16.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:16.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:16.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:16.0.5
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:17.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:17.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:17.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:17.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:17.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:18.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:18.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:18.0.10
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:18.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:18.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:18.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:18.0.5
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:18.0.6
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:18.0.7
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:18.0.8
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:18.0.9
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:19.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:19.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:19.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:19.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:19.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:20.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:20.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:20.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:20.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:20.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:21.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:21.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:21.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:21.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:21.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:22.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:22.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:22.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:22.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:22.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:22.0.5
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:23.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:23.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:23.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:23.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:23.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:9.0.0
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:9.0.1
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:9.0.2
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:9.0.3
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:9.0.4
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cpe:2.3:a:dolibarr:dolibarr_erp/crm:9.0.5