Path Traversal in SendSupportBundle allows File Deletion Outside the Intended Directory
Summary
| CVE | CVE-2026-78355 |
|---|---|
| State | PUBLISHED |
| Assigner | OTRS |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-12 07:16:36 UTC |
| Updated | 2026-10-12 07:16:36 UTC |
| Description | A path traversal vulnerability in the OTRS SendSupportBundle functionality allows an authenticated administrator to reference file paths outside the intended directory. This may allow files accessible to the OTRS application process to be deleted. The vulnerability does not bypass operating system file permissions. On OTRS versions prior to OTRS 7, the effective permissions of the web server process are relevant. Starting with OTRS 7, access is limited by the permissions of the dedicated OTRS user. Files with overly permissive ownership or file system permissions may therefore also be affected. The affected functionality may additionally attempt to include controlled files in a support bundle. However, support bundles are sent to a predefined OTRS support address, and direct disclosure of arbitrary files to the attacker has not been demonstrated. An attacker therefore requires valid administrative access to exploit the vulnerable functionality. The primary demonstrated impact is the deletion of files outside the intended directory within the effective permissions of the OTRS application process. This issue affects OTRS: * 7.0.X * 8.0.X * 2023.X * 2024.X * 2025.X * 2026.X before 2026.7.X Please note that ((OTRS)) Community Edition 6.x and before are vulnerable. Products based on the ((OTRS)) Community Edition also very likely to be affected |
Risk And Classification
Primary CVSS: v3.1 8.7 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
Problem Types: CWE-22 | CWE-22 CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 8.7 | HIGH | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H |
| 3.1 | CNA | CVSS | 8.7 | HIGH | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
HighUser Interaction
NoneScope
ChangedConfidentiality
NoneIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | OTRS GmbH Former OTRS AG | OTRS | affected 7.0.x | Not specified |
| CNA | OTRS GmbH Former OTRS AG | OTRS | affected 8.0.x | Not specified |
| CNA | OTRS GmbH Former OTRS AG | OTRS | affected 2023.x | Not specified |
| CNA | OTRS GmbH Former OTRS AG | OTRS | affected 2024.x | Not specified |
| CNA | OTRS GmbH Former OTRS AG | OTRS | affected 2025.x | Not specified |
| CNA | OTRS GmbH Former OTRS AG | OTRS | affected 2026.x 2026.6.x patch | Not specified |
| CNA | OTRS GmbH Former OTRS AG | OTRS Community Edition | affected 6.x | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| otrs.com/release-notes/otrs-security-advisory-2026-12 | [email protected] | otrs.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Special thanks to William Bastos (@chor4o) and Samara Gama (igobysamy) for reporting this vulnerability (en)
Additional Advisory Data
Solutions
CNA: Update to latest version of OTRS (2026.7.1. or later). Please note that there will be no OTRS 7 patches
There are currently no legacy QID mappings associated with this CVE.