CVE-2026-125371

tinyproxy: Tinyproxy: Access control bypass via improper hostname matching

tinyproxy

Tinyproxy through 1.11.3 contains an access control bypass vulnerability in acl_string_processing() in src/acl.c that compares only trailing hostname characters without checking DNS label boundaries. Attackers controlling the PTR record for their source IP, such as untrusted.net, can satisfy an 'Allow trusted.net' entry to use the proxy despite deny-by-default ACLs.

10. Nov 2026

Ausgewertete Quellen

• Red Hat
  Red Hat
• NVD
  CVE-2026-125371