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.
Metrics
Affected Vendors & Products
References
History
Mon, 03 Aug 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Sat, 01 Aug 2026 12:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | guzzlehttp/guzzle before 7.14.2 Proxy-Authorization Header Disclosure | |
| First Time appeared |
Guzzlephp
Guzzlephp guzzle |
|
| Weaknesses | CWE-200 | |
| CPEs | cpe:2.3:a:guzzlephp:guzzle:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Guzzlephp
Guzzlephp guzzle |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-08-01T12:22:17.139Z
Updated: 2026-08-03T18:08:40.368Z
Reserved: 2026-07-29T13:09:45.992Z
Link: CVE-2026-67339
Updated: 2026-08-03T18:08:09.904Z
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