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    CVE-2021-3851

    firefly-iii is vulnerable to URL Redirection to Untrusted Site

    Published:Oct 19, 2021
    Last Modified:Nov 21, 2024
    EPS:Oct 19, 2021
    EPSS Score:0.00169
    CVSS Score:5.4

    Affected Products

    Vendor
    Firefly-iii
    Product
    Firefly Iii

    Exploits

    https://huntr.dev/bounties/549a1040-9b5e-420b-9b80-20700dd9d592https://huntr.dev/bounties/549a1040-9b5e-420b-9b80-20700dd9d592

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-178 Cross-Site Flashing

    Related CVEs

    CVE-2026-71250 (CVSS 4.3) — Firefly III's webhook URL validator (IsValidWebhookUrl.php) filters most private/reserved IPv4 ranges but cont…
    CVE-2024-37893 (CVSS 5.9) — Firefly III is a free and open source personal finance manager. In affected versions an MFA bypass in the Fire…
    CVE-2024-22075 (CVSS 6.1) — Firefly III (aka firefly-iii) before 6.1.1 allows webhooks HTML Injection.…
    CVE-2023-1788 (CVSS 9.8) — Insufficient Session Expiration in GitHub repository firefly-iii/firefly-iii prior to 6.…
    CVE-2023-1789 (CVSS 9.8) — Improper Input Validation in GitHub repository firefly-iii/firefly-iii prior to 6.0.0.…
    CVE-2023-0298 (CVSS 6.5) — Incorrect Authorization in GitHub repository firefly-iii/firefly-iii prior to 5.8.0.…
    CVE-2021-4005 (CVSS 4.3) — firefly-iii is vulnerable to Cross-Site Request Forgery (CSRF)…
    CVE-2021-4015 (CVSS 4.3) — firefly-iii is vulnerable to Cross-Site Request Forgery (CSRF)…
    CVE-2021-3921 (CVSS 4.3) — firefly-iii is vulnerable to Cross-Site Request Forgery (CSRF)…
    CVE-2021-3901 (CVSS 8.8) — firefly-iii is vulnerable to Cross-Site Request Forgery (CSRF)…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High