Insufficient Neutralization of Formula Elements in CSV Exports
Summary
| CVE | CVE-2026-93581 |
|---|---|
| State | PUBLISHED |
| Assigner | OTRS |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-12 07:16:37 UTC |
| Updated | 2026-10-12 07:16:37 UTC |
| Description | User-controlled values are not sufficiently neutralized when included in CSV exports. Values originating from user input, including data submitted by authenticated users or received through external communication channels such as email, may be stored in fields that are later included in CSV exports. An attacker can therefore inject values beginning with spreadsheet formula characters such as =, +, -, or @. An attacker does not necessarily require an authenticated account if the affected field can be populated through an external input channel such as incoming email. When an affected CSV file is opened in spreadsheet software, the application may interpret these values as formulas instead of plain text. Depending on the spreadsheet application and its security configuration, a malicious formula may cause unintended actions, disclose information, or invoke external functionality. Exploitation may require the user opening the exported CSV file to confirm one or more security warning dialogs. The vulnerability does not execute code on the OTRS server; any additional impact occurs in the spreadsheet application used to process the exported file. 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 6.1 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Problem Types: CWE-1236 | CWE-1236 CWE-1236 Improper Neutralization of Formula Elements in a CSV File.
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 6.1 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| 3.1 | CNA | CVSS | 6.1 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
RequiredScope
ChangedConfidentiality
LowIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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-2026-17 | [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 Thomas Gunning and Jonathan Ash 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.