CVE-2026-25885

CVE-2026-25885 affects PolarLearn: the group chat WebSocket (wss://polarlearn.nl/api/v1/ws) allowed unauthenticated clients to subscribe to and post in any group chat, storing messages in the chatContent. This is described for 0-PRERELEASE-16 and earlier. The vulnerability is unpatched/undetailed...

PolarLearn 访问控制错误漏洞

PolarLearn is an online learning platform developed by PolarNL. Versions of PolarLearn prior to 0-PRERELEASE-16 contain access control vulnerability issues. This vulnerability stems from the use of WebSocket in group chats without the need for login, which may allow unverified clients to subscrib...

PT-2026-7166

Name of the Vulnerable Software and Affected Versions PolarLearn versions prior to 0-PRERELEASE-16 Description PolarLearn is a free and open-source learning program. The group chat WebSocket at wss://polarlearn.nl/api/v1/ws can be used without authentication. An unauthenticated client can subscri...

CVE-2026-25222

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, a timing attack vulnerability in the sign-in process allows unauthenticated attackers to determine if a specific email address is registered on the platform. By measuring the response time of the login endpoint...

CVE-2026-25221

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, the OAuth 2.0 implementation for GitHub and Google login providers is vulnerable to Login Cross-Site Request Forgery CSRF. The application fails to implement and verify the state parameter during the...

CVE-2026-25221

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, the OAuth 2.0 implementation for GitHub and Google login providers is vulnerable to Login Cross-Site Request Forgery CSRF. The application fails to implement and verify the state parameter during the...

CVE-2026-25222

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, a timing attack vulnerability in the sign-in process allows unauthenticated attackers to determine if a specific email address is registered on the platform. By measuring the response time of the login endpoint...

CVE-2026-25222

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, a timing attack vulnerability in the sign-in process allows unauthenticated attackers to determine if a specific email address is registered on the platform. By measuring the response time of the login endpoint...

CVE-2026-25222 PolarLearn Affected by User Enumeration via Argon2 Timing Attack on Sign-In Endpoint

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, a timing attack vulnerability in the sign-in process allows unauthenticated attackers to determine if a specific email address is registered on the platform. By measuring the response time of the login endpoint...

CVE-2026-25222 PolarLearn Affected by User Enumeration via Argon2 Timing Attack on Sign-In Endpoint

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, a timing attack vulnerability in the sign-in process allows unauthenticated attackers to determine if a specific email address is registered on the platform. By measuring the response time of the login endpoint...

CVE-2026-25222 PolarLearn Affected by User Enumeration via Argon2 Timing Attack on Sign-In Endpoint

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, a timing attack vulnerability in the sign-in process allows unauthenticated attackers to determine if a specific email address is registered on the platform. By measuring the response time of the login endpoint...

CVE-2026-25222

CVE-2026-25222 describes a timing-attack in PolarLearn’s sign-in flow for versions prior to 0-PRERELEASE-15. An unauthenticated attacker can infer whether an email is registered by measuring login response times: requests for existing users take ~650ms, while non-existent users are ~160ms, becaus...

CVE-2026-25221 PolarLearn has Multiple Login CSRFs via Missing OAuth state Parameter (GitHub & Google)

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, the OAuth 2.0 implementation for GitHub and Google login providers is vulnerable to Login Cross-Site Request Forgery CSRF. The application fails to implement and verify the state parameter during the...

CVE-2026-25221 PolarLearn has Multiple Login CSRFs via Missing OAuth state Parameter (GitHub & Google)

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, the OAuth 2.0 implementation for GitHub and Google login providers is vulnerable to Login Cross-Site Request Forgery CSRF. The application fails to implement and verify the state parameter during the...

CVE-2026-25221 PolarLearn has Multiple Login CSRFs via Missing OAuth state Parameter (GitHub & Google)

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, the OAuth 2.0 implementation for GitHub and Google login providers is vulnerable to Login Cross-Site Request Forgery CSRF. The application fails to implement and verify the state parameter during the...

CVE-2026-25221

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, the OAuth 2.0 implementation for GitHub and Google login providers is vulnerable to Login Cross-Site Request Forgery CSRF. The application fails to implement and verify the state parameter during the...

CVE-2026-25221

CVE-2026-25221 (PolarLearn) affects PolarLearn prior to 0-PRERELEASE-15. The OAuth 2.0 login flow for GitHub and Google providers fails to implement/verify the state parameter, enabling a Login CSRF attack. An attacker can pre-authenticate a session and lure a victim into logging into the attacke...

PT-2026-5729

Name of the Vulnerable Software and Affected Versions PolarLearn versions 0-PRERELEASE-15 and earlier Description The OAuth 2.0 implementation for GitHub and Google login providers is susceptible to Login Cross-Site Request Forgery CSRF. The application does not implement and verify the state...

PolarLearn 信息泄露漏洞

PolarLearn is an online learning platform developed by PolarNL. Versions of PolarLearn prior to 0-PRERELEASE-15 contained a vulnerability related to information leakage. This vulnerability stemmed from a time-based attack during the login process, which could lead to the enumeration of registered...

PolarLearn 跨站请求伪造漏洞

PolarLearn is an online learning platform developed by PolarNL as open source. Versions of PolarLearn prior to 0-PRERELEASE-15 contained a cross-site request forgeing vulnerability. This vulnerability stemmed from the lack of validation of the state parameter in the OAuth 2.0 implementation, whic...