CVE-2026-67339
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Aug 01, 2026
Vendor
unknown
Description
guzzlehttp/guzzle versions before 7.14.2 fail to properly isolate Proxy-Authorization headers from origin servers in cURL handlers. Attackers can capture proxy credentials through origin server access logs when requests are redirected, bypassed, or sent through SOCKS proxies that Guzzle misclassifies as direct connections.