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    CVE-2024-53846

    OTP is a set of Erlang libraries, which consists of the Erlang runtime system, a number of ready-to-use components mainly written in Erlang, and a set of design principles for Erlang programs. A regression was introduced into the ssl application of OTP starting at OTP-25.3.2.8, OTP-26.2, and OTP-27.0, resulting in a server or client verifying the peer when incorrect extended key usage is presented (i.e., a server will verify a client if they have server auth ext key usage and vice versa).

    Published:Dec 5, 2024
    Last Modified:Apr 15, 2026
    EPS:Dec 5, 2024
    EPSS Score:0.00042
    CVSS Score:5.5

    Affected Products

    Vendor
    Erlang
    Product
    Otp

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

    Related CVEs

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    CVE-2026-73270 (CVSS 8.2) — Improper Handling of Case Sensitivity vulnerability in Erlang/OTP inets httpd allows a remote unauthenticated …
    CVE-2026-75538 (CVSS 8.2) — An attacker that connects to an open Erlang TCP port that uses the inet driver with {packet,4} mode can use a …
    CVE-2026-74994 (CVSS 6) — The mod_auth module in OTP's inets httpd server, when configured with dets or mnesia authentication backends a…
    CVE-2026-74835 (CVSS 8.7) — The inets application HTTP server httpd fails to enforce a configured body-size limit on chunked request. Thi…
    CVE-2026-73812 (CVSS 8.3) — httpd function check_header/3 rejects duplicate Content-Length (per CVE-2026-23941) but never checks for the T…
    CVE-2026-66357 (CVSS 8.3) — httpd has never implemented obs-fold (RFC 2616 §2.2 / RFC 7230 §3.2.4 header continuation lines). Every CRLF f…
    CVE-2026-59696 (CVSS 6.9) — Improper Validation of Specified Quantity in Input vulnerability in Erlang/OTP stdlib allows a remote attacker…
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    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