CVE catalog
CVE-2024-6844
Flask-CORS vulnerabilities
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.32% · Oct 25, 2026
A vulnerability in corydolphin/flask-cors version 4.0.1 allows for inconsistent CORS matching due to the handling of the '+' character in URL paths. The request.path is passed through the unquote_plus function, which converts the '+' character to a space ' '. This behavior leads to incorrect path normalization, causing potential mismatches in CORS configuration. As a result, endpoints may not be matched correctly to their CORS settings, leading to unexpected CORS policy application. This can cause unauthorized cross-origin access or block valid requests, creating security vulnerabilities and usability issues.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python-flask-cors | sid | 6.0.5-1 | fixed |
| Debian | python-flask-cors | forky | 6.0.5-1 | fixed |
| Debian | python-flask-cors | trixie | 6.0.1-1 | fixed |
| Debian | python-flask-cors | bookworm | 3.0.10-2+deb12u1 | fixed |
| Ubuntu | python-flask-cors | noble | 4.0.0-1ubuntu0.1~esm1 | fixed |
| Ubuntu | python3-flask-cors | noble | 4.0.0-1ubuntu0.1~esm1 | fixed |
| PyPI | flask-cors | Not reported | 6.0.0 | fixed |
| Ubuntu | python-flask-cors | pro | 4.0.0-1 | vulnerable |
| Ubuntu | python-flask-cors | pro | 4.0.0-1ubuntu0.1~esm1 | fixed |
| Ubuntu | python-flask-cors | 22.04 | 3.0.9-2 | vulnerable |
| Ubuntu | python-flask-cors | 22.04 | 3.0.9-2ubuntu0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-flask-cors | source | sid | 6.0.0-1 | not yet assigned | Not reported | [1100988] |
| Debian | python-flask-cors | source | forky | 6.0.0-1 | not yet assigned | Not reported | [1100988] |
| Debian | python-flask-cors | source | trixie | 6.0.0-1 | not yet assigned | Not reported | [1100988] |
| Debian | python-flask-cors | source | bookworm | 3.0.10-2+deb12u1 | not yet assigned | Not reported | [1100988] |
| Ubuntu | python-flask-cors | deb | noble | 4.0.0-1ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| Ubuntu | python3-flask-cors | deb | noble | 4.0.0-1ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| PyPI | flask-cors | PyPI | Not reported | 6.0.0 | Not reported | GHSA-8VGW-P6QM-5GR7 | Not reported |
| Ubuntu | python-flask-cors | deb | pro | 4.0.0-1ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2024-6844 | Not reported |
| Ubuntu | python-flask-cors | deb | 22.04 | 3.0.9-2ubuntu0.1 | Not reported | UBUNTU-CVE-2024-6844 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-flask-cors]Fixed
Source package: [python-flask-cors]
Details (2)
3.0.10-2+deb12u1· all · bookwormFixed · Fixed:
3.0.10-2+deb12u1usn · python-flask-cors · debian · bookworm; usn · python-flask-cors · debian · 12
3.0.10-2+deb12u1· all · bookwormFixed · Fixed:
3.0.10-2+deb12u1usn · python-flask-cors · debian · bookworm; usn · python-flask-cors · debian · 12
[Debian 13 (Trixie)]
- [python3-flask-cors]Fixed
Source package: [python-flask-cors]
Details (2)
6.0.1-1· all · trixieFixed · Fixed:
6.0.0-1usn · python-flask-cors · debian · 13
6.0.1-1· all · trixieFixed · Fixed:
6.0.0-1usn · python-flask-cors · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10485-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2024-6844]
- [https://osv.dev/vulnerability/GHSA-8vgw-p6qm-5gr7]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2024-6844]
- [https://security-tracker.debian.org/tracker/CVE-2024-6844]
- [https://ubuntu.com/security/notices/USN-7612-1]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]