PYSEC-2022-193

Import Source

https://github.com/pypa/advisory-database/blob/main/vulns/flask-session-captcha/PYSEC-2022-193.yaml

Aliases

• CVE-2022-24880
• GHSA-7r87-cj48-wj45

Published

2022-04-25T22:15:00Z

Modified

2023-11-08T04:08:39.356991Z

Details

flask-session-captcha is a package which allows users to extend Flask by adding an image based captcha stored in a server side session. In versions prior to 1.2.1, he captcha.validate() function would return None if passed no value (e.g. by submitting an having an empty form). If implementing users were checking the return value to be False, the captcha verification check could be bypassed. Version 1.2.1 fixes the issue. Users can workaround the issue by not explicitly checking that the value is False. Checking the return value less explicitly should still work.

References

• https://github.com/Tethik/flask-session-captcha/releases/tag/v1.2.1
• https://github.com/Tethik/flask-session-captcha/pull/27
• https://github.com/Tethik/flask-session-captcha/commit/2811ae23a38d33b620fb7a07de8837c6d65c13e4
• https://github.com/Tethik/flask-session-captcha/security/advisories/GHSA-7r87-cj48-wj45