CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCVE-2020-7965
flaskparser.py in Webargs 5.x through 5.5.2 doesn't check that the Content-Type header is application/json when receiving JSON input. If the request body is valid JSON, it will accept it even if the content type is application/x-www-form-urlencoded. This allows for JSON POST requests to be made across domains, leading to CSRF.
Severity
- EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-31)
- CWE
- CWE-352
- Published
- Modified
- Record from
- the NVD, synced
Affected
- webargs_project:webargs
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-fjq3-5pxw-4wj4 | PyPI | webargs | >=5.0.0 <5.5.3 | 5.5.3 |
| GHSA-fjq3-5pxw-4wj4 | PyPI | webargs | >=6.0.0b1 <6.0.0b4 | 6.0.0b4 |
| PYSEC-2020-156 | PyPI | webargs | >=5.0.0 <5.5.3 | 5.5.3 |