python3-flask-cors: corydolphin/flask-cors version 4.0.1 contains an improper regex pathmatching vulnerability
CVE-2024-6839 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.
corydolphin/flask-cors version 4.0.1 contains an improper regex pathmatching vulnerability. The plugin prioritizes longer regex patterns overmore specific ones when matching paths, which can lead to less restrictiveCORS policies being applied to sensitive endpoints. This mismatch in regexpattern priority allows unauthorized cross-origin access to sensitive dataor functionality, potentially exposing confidential information andincreasing the risk of unauthorized actions by malicious actors.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-flask-cors · Debian 12.15 (bookworm) | 3.0.10-2+deb12u1 | DEBIAN-CVE-2024-6839 | Mar 20, 2025 |
| python-flask-cors · Debian 13.5 (trixie) | 6.0.1-1 | DEBIAN-CVE-2024-6839 | Mar 20, 2025 |
| python-flask-cors · Debian 14 | 6.0.1-1 | DEBIAN-CVE-2024-6839 | 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 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.