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    6 vulnerabilities by polarlearn

    CVE-2026-39322 (GCVE-0-2026-39322)

    Vulnerability from cvelistv5 – Published: 2026-04-07 19:03 – Updated: 2026-04-09 16:16
    VLAI
    Title
    PolarLearn: Any password authenticates banned accounts and grants API access
    Summary
    PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, POST /api/v1/auth/sign-in creates a valid session for banned accounts before verifying the supplied password. That session is then accepted across authenticated /api routes, enabling account data access and authenticated actions as the banned user.
    Severity
    9.2 (Critical)
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
    8.8 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Vendor Product Version
    polarnl PolarLearn Affected: <= v0-PRERELEASE-15
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-35610 (GCVE-0-2026-35610)

    Vulnerability from cvelistv5 – Published: 2026-04-07 16:56 – Updated: 2026-04-07 18:32
    VLAI
    Title
    PolarLearn has a Server Action Admin Bypass in Account Management Actions
    Summary
    PolarLearn is a free and open-source learning program. In 0-PRERELEASE-14 and earlier, setCustomPassword(userId, password) and deleteUser(userId) in the account-management module used an inverted admin check. Because of the inverted condition, authenticated non-admin users were allowed to execute both actions, while real admins were rejected. This is a direct privilege-escalation issue in the application.
    Severity
    8.8 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    polarnl PolarLearn Affected: <= 0-PRERELEASE-14
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-25885 (GCVE-0-2026-25885)

    Vulnerability from cvelistv5 – Published: 2026-02-09 21:15 – Updated: 2026-02-10 15:58
    VLAI
    Title
    PolarLearn allows Unauthenticated WebSocket access allows subscribing to and posting in arbitrary group chats
    Summary
    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 group. The server accepts the message and stores it in the group’s chatContent, so this is not just a visual spam issue.
    Severity
    10 (Critical)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-285 - Improper Authorization
    • CWE-306 - Missing Authentication for Critical Function
    Assigner
    References
    Impacted products
    Vendor Product Version
    polarnl PolarLearn Affected: < 0-PRERELEASE-16
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-25222 (GCVE-0-2026-25222)

    Vulnerability from cvelistv5 – Published: 2026-02-02 23:01 – Updated: 2026-02-04 21:09
    VLAI
    Title
    PolarLearn Affected by User Enumeration via Argon2 Timing Attack on Sign-In Endpoint
    Summary
    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, an attacker can distinguish between valid and invalid email addresses. This occurs because the server only performs the computationally expensive Argon2 password hashing if the user exists in the database. Requests for existing users take significantly longer (~650ms) than requests for non-existent users (~160ms).
    Severity
    6.3 (Medium)
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    Assigner
    References
    Impacted products
    Vendor Product Version
    polarnl PolarLearn Affected: <= 0-PRERELEASE-15
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-25221 (GCVE-0-2026-25221)

    Vulnerability from cvelistv5 – Published: 2026-02-02 22:59 – Updated: 2026-02-03 19:52
    VLAI
    Title
    PolarLearn has Multiple Login CSRFs via Missing OAuth state Parameter (GitHub & Google)
    Summary
    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 authentication flow. This allows an attacker to pre-authenticate a session and trick a victim into logging into the attacker's account. Any data the victim then enters or academic progress they make is stored on the attacker's account, leading to data loss for the victim and information disclosure to the attacker.
    Severity
    2.3 (Low)
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-352 - Cross-Site Request Forgery (CSRF)
    Assigner
    References
    Impacted products
    Vendor Product Version
    polarnl PolarLearn Affected: <= v0-PRERELEASE-15
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-25126 (GCVE-0-2026-25126)

    Vulnerability from cvelistv5 – Published: 2026-01-29 22:06 – Updated: 2026-02-02 16:34
    VLAI
    Title
    PolarLearn's unvalidated vote direction allows vote count manipulation
    Summary
    PolarLearn is a free and open-source learning program. Prior to version 0-PRERELEASE-15, the vote API route (`POST /api/v1/forum/vote`) trusts the JSON body’s `direction` value without runtime validation. TypeScript types are not enforced at runtime, so an attacker can send arbitrary strings (e.g., `"x"`) as `direction`. Downstream (`VoteServer`) treats any non-`"up"` and non-`null` value as a downvote and persists the invalid value in `votes_data`. This can be exploited to bypass intended business logic. Version 0-PRERELEASE-15 fixes the vulnerability.
    Severity
    7.1 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-20 - Improper Input Validation
    Assigner
    References
    Impacted products
    Vendor Product Version
    polarnl PolarLearn Affected: < 0-PRERELEASE-15
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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