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    2 vulnerabilities by formbricks

    CVE-2025-59934 (GCVE-0-2025-59934)

    Vulnerability from cvelistv5 – Published: 2025-09-26 23:03 – Updated: 2025-09-29 14:59
    VLAI
    Title
    Formbricks missing JWT signature verification
    Summary
    Formbricks is an open source qualtrics alternative. Prior to version 4.0.1, Formbricks is missing JWT signature verification. This vulnerability stems from a token validation routine that only decodes JWTs (jwt.decode) without verifying their signatures. Both the email verification token login path and the password reset server action use the same validator, which does not check the token’s signature, expiration, issuer, or audience. If an attacker learns the victim’s actual user.id, they can craft an arbitrary JWT with an alg: "none" header and use it to authenticate and reset the victim’s password. This issue has been patched in version 4.0.1.
    Severity
    9.4 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-347 - Improper Verification of Cryptographic Signature
    • CWE-345 - Insufficient Verification of Data Authenticity
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Vendor Product Version
    formbricks formbricks Affected: < 4.0.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2025-59934 (GCVE-0-2025-59934)

    Vulnerability from nvd – Published: 2025-09-26 23:03 – Updated: 2025-09-29 14:59
    VLAI
    Title
    Formbricks missing JWT signature verification
    Summary
    Formbricks is an open source qualtrics alternative. Prior to version 4.0.1, Formbricks is missing JWT signature verification. This vulnerability stems from a token validation routine that only decodes JWTs (jwt.decode) without verifying their signatures. Both the email verification token login path and the password reset server action use the same validator, which does not check the token’s signature, expiration, issuer, or audience. If an attacker learns the victim’s actual user.id, they can craft an arbitrary JWT with an alg: "none" header and use it to authenticate and reset the victim’s password. This issue has been patched in version 4.0.1.
    Severity
    9.4 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-347 - Improper Verification of Cryptographic Signature
    • CWE-345 - Insufficient Verification of Data Authenticity
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Vendor Product Version
    formbricks formbricks Affected: < 4.0.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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