CVE-2026-25885

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-16 and earlier, the group chat WebSocket at wss://polarlearn.nl/api/v1/ws can be used without logging in. An unauthenticated client can subscribe to any group chat by providing a group UUID, and can also send messages to any...

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

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-2026-25222 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-2026-25221 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...