CVE-2026-81730
published 2026-08-27CVE-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…
PriorityP347high8.2CVSS 3.1
AVNACLPRNUINSUCNIHAL
EPSS
0.56%
45.5th percentile
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.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| dolibarr | dolibarr | >= 9.0.0 < 24.0.0 | 24.0.0 |
| dolibarr | dolibarr_erp_crm | >= 9.0.0 < 24.0.0 | 24.0.0 |
CVSS provenance
nvdv3.18.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
nvdv4.08.8HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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GHSA
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.
ghsa_unreviewed·2026-08-27
CVE-2026-81730 [HIGH] CWE-22 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.
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,
VulDB
Dolibarr up to 23.0.4 emailcollector emailcollector.lib.php saveAttachment filename path traversal
vuldb·2026-08-27·CVSS 8.2
CVE-2026-81730 [HIGH] Dolibarr up to 23.0.4 emailcollector emailcollector.lib.php saveAttachment filename path traversal
A vulnerability was found in Dolibarr up to 23.0.4. It has been rated as critical. This issue affects the function saveAttachment of the file htdocs/emailcollector/lib/emailcollector.lib.php of the component emailcollector. The manipulation of the argument filename leads to path traversal.
This vulnerability is traded as CVE-2026-81730. It is possible to initiate the attack remotely. There is no exploit available.
Upgrading the affected component is advised.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://github.com/Dolibarr/dolibarrhttps://github.com/Dolibarr/dolibarr/blob/23.0.4/htdocs/emailcollector/lib/emailcollector.lib.php#L187https://github.com/Dolibarr/dolibarr/commit/264a44defb5e438689c75679617f6edc4c038abchttps://www.vulncheck.com/advisories/dolibarr-9.0.0-through-23.0.4-path-traversal-via-emailcollector-attachment-filename
2026-08-27
Published