CVE-2025-8546 atjiu pybbs Verification Code login Captcha
Attackers can bypass login authentication by guessing the verification code, potentially taking over user accounts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-8546?
CVE-2025-8546 is a medium-severity authentication bypass vulnerability in atjiu pybbs, published on 5 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability, which was classified as problematic, was found in atjiu pybbs up to 6.0.0. This affects the function adminlogin/login of the component Verification Code Handler. The manipulation leads to guessable captcha. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The patch is named ecaf8d46944fd03e3c4ea05698f8acf0aaa570cf. It is recommended to apply a patch to fix this issue.
Which versions are affected by CVE-2025-8546?
It affects 1 product.
Products include Pybbs Project Pybbs.
How do I fix CVE-2025-8546?
No fix has been published for CVE-2025-8546 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-8546 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8546 exists.
Other vulnerabilities in atjiu pybbs
- CVE-2020-28702 SQL injection in n/a
- CVE-2025-8547 atjiu pybbs Email Verification improper authorization
- CVE-2025-8548 atjiu pybbs Registered Email SettingsApiController.java sendEmailCode information exposure
- CVE-2025-8549 atjiu pybbs UserAdminController.java update weak password
- CVE-2022-23391 Cross-site scripting in n/a
Sources
Also known as GHSA-v349-5pqr-x5hv.