CVE-2026-41073

MEDIUM 4.6

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

CVSS Score

4.6

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-1236
Vendor	bestpractical
Product	rt
Published	May 22, 2026
Last Updated	May 23, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

bestpractical / rt

< 5.0.10 >= 6.0.0, < 6.0.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/bestpractical/rt/security/advisories/GHSA-6x92-7v65-7m3r github.com: https://github.com/bestpractical/rt/releases/tag/rt-5.0.10 github.com: https://github.com/bestpractical/rt/releases/tag/rt-6.0.3