CVE-2026-41073

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

CVSS 4.6 MEDIUMEPSS 0.2%CWE-1236

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.6EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

22 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

bestpractical · rt

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References

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