CVE-2025-54581

HIGH EPSS 40.1%
Published Jul 30, 202511mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Jul 30, 2025 11mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
40.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-369

References 3

  • github.com https://github.com/0x676e67/vproxy/commit/aa1bf64c5e7f1c471395f9f29175ffc1b16a1079
  • github.com https://github.com/0x676e67/vproxy/releases/tag/v2.4.0
  • github.com https://github.com/0x676e67/vproxy/security/advisories/GHSA-7h24-c332-p48c

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.