CVE-2025-54581 – Vproxy HTTP Proxy-Authorization Header DoS Vulnerability

The following table lists the changes that have been made to the
CVE-2025-54581 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Jul. 30, 2025

    Action Type Old Value New Value
    Added Description vproxy is an HTTP/HTTPS/SOCKS5 proxy server. In versions 2.3.3 and below, untrusted data is extracted from the user-controlled HTTP Proxy-Authorization header and passed to Extension::try_from and flows into parse_ttl_extension where it is parsed as a TTL value. If an attacker supplies a TTL of zero (e.g. by using a username such as ‘configuredUser-ttl-0’), the modulo operation ‘timestamp % ttl’ will cause a division by zero panic, causing the server to crash causing a denial-of-service. This is fixed in version 2.4.0.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-369
    Added Reference https://github.com/0x676e67/vproxy/commit/aa1bf64c5e7f1c471395f9f29175ffc1b16a1079
    Added Reference https://github.com/0x676e67/vproxy/releases/tag/v2.4.0
    Added Reference https://github.com/0x676e67/vproxy/security/advisories/GHSA-7h24-c332-p48c
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