Vulnerability · Published May 22, 2026 · Assigned by GitHub_M
CVE-2026-41073RT: Spreadsheet downloads vulnerable to CSV/formula injection in Microsoft Excel and similar apps
Medium 4.6
In plain English
A medium-severity security flaw in rt from bestpractical. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | request-tracker4 | 4.4.6+dfsg-1.1+deb12u4 | DEBIAN-CVE-2026-41073 |
| Debian:12 | request-tracker5 | 5.0.3+dfsg-3~deb12u6 | DEBIAN-CVE-2026-41073 |
| Debian:13 | request-tracker5 | 5.0.7+dfsg-4+deb13u3 | DEBIAN-CVE-2026-41073 |
| Debian:14 | request-tracker5 | 5.0.10+dfsg-1 | DEBIAN-CVE-2026-41073 |
| Ubuntu:22.04:LTS | request-tracker4 | no fix listed | UBUNTU-CVE-2026-41073 |
| Ubuntu:24.04:LTS | request-tracker4 | no fix listed | UBUNTU-CVE-2026-41073 |
| Ubuntu:25.10 | request-tracker4 | no fix listed | UBUNTU-CVE-2026-41073 |
| Ubuntu:26.04:LTS | request-tracker4 | no fix listed | UBUNTU-CVE-2026-41073 |
| Ubuntu:25.10 | request-tracker5 | no fix listed | UBUNTU-CVE-2026-41073 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| bestpractical | rt | < 5.0.10>= 6.0.0, < 6.0.3 |
Weakness: CWE-1236 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
References
- https://github.com/bestpractical/rt/security/advisories/GHSA-6x92-7v65-7m3r x_refsource_CONFIRM
- https://github.com/bestpractical/rt/releases/tag/rt-5.0.10 x_refsource_MISC
- https://github.com/bestpractical/rt/releases/tag/rt-6.0.3 x_refsource_MISC