python3-flask-cors: A vulnerability in corydolphin/flask-cors version 4.0.1 allows forinconsistent CORS matching due to the handling of t...
CVE-2024-6844 is fixed in 2 products on 1 platform, first by python3-flask-cors 3.0.8-2ubuntu0.1+esm1, released March 20, 2025. It is not reported as exploited. Patch Radar priority: Routine.
A vulnerability in corydolphin/flask-cors version 4.0.1 allows forinconsistent CORS matching due to the handling of the '+' character in URLpaths. The request.path is passed through the unquote_plus function, whichconverts the '+' character to a space ' '. This behavior leads to incorrectpath normalization, causing potential mismatches in CORS configuration. Asa result, endpoints may not be matched correctly to their CORS settings,leading to unexpected CORS policy application. This can cause unauthorizedcross-origin access or block valid requests, creating securityvulnerabilities and usability issues.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-flask-cors · Debian 12.15 (bookworm) | 3.0.10-2+deb12u1 | DEBIAN-CVE-2024-6844 | Mar 20, 2025 |
| python-flask-cors · Debian 13.5 (trixie) | 6.0.0-1 | DEBIAN-CVE-2024-6844 | Mar 20, 2025 |
| python-flask-cors · Debian 14 | 6.0.0-1 | DEBIAN-CVE-2024-6844 | Mar 20, 2025 |
| python3-flask-cors · Ubuntu 20.04 LTS (focal) | 3.0.8-2ubuntu0.1+esm1 | python3-flask-cors 3.0.8-2ubuntu0.1+esm1 | Mar 20, 2025 |
| python3-flask-cors · Ubuntu 22.04.1 LTS (jammy) | 3.0.9-2ubuntu0.1 | python3-flask-cors 3.0.9-2ubuntu0.1 | Mar 20, 2025 |
| python3-flask-cors · Ubuntu 24.04.5 LTS (noble) | 4.0.0-1ubuntu0.1~esm1 | python3-flask-cors 4.0.0-1ubuntu0.1~esm1 | Mar 20, 2025 |
| python3-flask-cors · Ubuntu 24.10 (oracular) | 4.0.1-1ubuntu0.1 | python3-flask-cors 4.0.1-1ubuntu0.1 | Jan 16, 2026 |
| python3-flask-cors · Ubuntu 25.04 (plucky) | 5.0.0-1ubuntu0.1 | python3-flask-cors 5.0.0-1ubuntu0.1 | Jan 16, 2026 |
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