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CVE-2026-67339

6.9 medium SSVC exploitation: none Awaiting Analysis
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 6.9NVD modified 2026-10-08 16:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 2