CVE-2022-24880
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- Exploit odds
- 1.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.2% in the next 30 days (EPSS).
- Severity: 5.3 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.2% · EPSS, next 30 days
- Weakness
- CWE-253
- Record status
- Modified
Affected
- flask-session-captcha Project flask-session-captcha < 1.2.1
Attack profile CVSS 3.1 · 5.3
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2022-24880.md and follow it. Check whether this project is affected by CVE-2022-24880. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/Tethik/flask-session-captcha/commit/2811ae23a38d33b620fb7a07de8837c6d65c13e4
- https://github.com/Tethik/flask-session-captcha/pull/27
- https://github.com/Tethik/flask-session-captcha/releases/tag/v1.2.1
- https://github.com/Tethik/flask-session-captcha/security/advisories/GHSA-7r87-cj48-wj45
- https://github.com/Tethik/flask-session-captcha/commit/2811ae23a38d33b620fb7a07de8837c6d65c13e4
- https://github.com/Tethik/flask-session-captcha/pull/27
- https://github.com/Tethik/flask-session-captcha/releases/tag/v1.2.1
- https://github.com/Tethik/flask-session-captcha/security/advisories/GHSA-7r87-cj48-wj45
References
- https://github.com/Tethik/flask-session-captcha/commit/2811ae23a38d33b620fb7a07de8837c6d65c13e4
- https://github.com/Tethik/flask-session-captcha/pull/27
- https://github.com/Tethik/flask-session-captcha/releases/tag/v1.2.1
- https://github.com/Tethik/flask-session-captcha/security/advisories/GHSA-7r87-cj48-wj45
- https://github.com/Tethik/flask-session-captcha/commit/2811ae23a38d33b620fb7a07de8837c6d65c13e4
- https://github.com/Tethik/flask-session-captcha/pull/27
- https://github.com/Tethik/flask-session-captcha/releases/tag/v1.2.1
- https://github.com/Tethik/flask-session-captcha/security/advisories/GHSA-7r87-cj48-wj45