Description
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.
Published: 2022-04-25
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2022-0105 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.
Github GHSA Github GHSA GHSA-7r87-cj48-wj45 Potential Captcha Validate Bypass in flask-session-captcha
History

Wed, 23 Apr 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Flask-session-captcha Project Flask-session-captcha
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-04-23T18:32:31.559Z

Reserved: 2022-02-10T00:00:00.000Z

Link: CVE-2022-24880

cve-icon Vulnrichment

Updated: 2024-08-03T04:29:00.717Z

cve-icon NVD

Status : Modified

Published: 2022-04-25T22:15:43.883

Modified: 2024-11-21T06:51:18.540

Link: CVE-2022-24880

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses