CVE-2026-41073 MEDIUM

CVE-2026-41073: RT: Spreadsheet downloads vulnerable to CSV/formula injection in Microsoft Excel and similar apps

Vendor Bestpractical
Product rt
Weakness CWE-1236
Published May 22, 2026
Last update May 23, 2026

CVSS base score

4.6/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

What the vulnerability does

01Description

RT is an open source, enterprise-grade issue and ticket tracking system. Versions prior to 5.0.10 and 6.0.0 through 6.0.2 contain a spreadsheet (CSV/formula) injection vulnerability. User-controlled data in spreadsheet exports is not sanitized before being written to the output file, which can cause spreadsheet applications to interpret crafted values as formulas or macros when the file is opened. This issue has been fixed in versions 5.0.10 and 6.0.3. If developers are unable to upgrade immediately, they can temporarily work around this issue by avoiding opening exported RT spreadsheet files directly in spreadsheet applications when the data may contain untrusted user input.

Key dates

02Disclosure timeline

May 22, 2026 CVE published
May 23, 2026 Record updated