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    CVE-2020-5233

    OAuth2 Proxy before 5.0 has an open redirect vulnerability. Authentication tokens could be silently harvested by an attacker. This has been patched in version 5.0.

    Published:Jan 30, 2020
    Last Modified:Nov 21, 2024
    EPS:Jan 30, 2020
    EPSS Score:0.00287
    CVSS Score:5.9

    Affected Products

    Vendor
    Oauth2 Proxy Project
    Product
    Oauth2 Proxy

    Exploits

    https://github.com/pusher/oauth2_proxy/security/advisories/GHSA-qqxw-m5fj-f7gvhttps://github.com/pusher/oauth2_proxy/security/advisories/GHSA-qqxw-m5fj-f7gv

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-178 Cross-Site Flashing

    Related CVEs

    CVE-2026-83589 (CVSS 6.1) — No description is available for this CVE.…
    CVE-2026-76835 (CVSS 9.3) — OAuth2 Proxy honours a client-supplied X-Forwarded-Uri header when deciding whether a request may skip authent…
    CVE-2026-40575 (CVSS 9.1) — OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions 7.5.0 through 7.…
    CVE-2026-41059 (CVSS 8.2) — OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions 7.5.0 through 7.…
    CVE-2026-40574 (CVSS 6.8) — OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Prior to 7.15.2, an autho…
    CVE-2026-34457 (CVSS 9.1) — OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions prior to 7.15.2 …
    CVE-2026-34454 (CVSS 3.5) — OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. A regression introduced i…
    CVE-2025-64484 (CVSS 8.5) — OAuth2-Proxy is an open-source tool that can act as either a standalone reverse proxy or a middleware componen…
    CVE-2025-54576 (CVSS 9.1) — OAuth2-Proxy is an open-source tool that can act as either a standalone reverse proxy or a middleware componen…
    CVE-2021-21411 (CVSS 5.5) — OAuth2-Proxy is an open source reverse proxy that provides authentication with Google, Github or other provide…

    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