CVE-2026-67339
1 advisory.
Packagist/guzzlehttp/guzzle CVE-2026-67339: medium 5.3
Guzzle: Proxy-Authorization headers can be sent to origin servers
Action: Upgrade guzzlehttp/guzzle to 7.14.2 or later.
composer require guzzlehttp/guzzle:7.14.2Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 7.14.2 | - |
Fixed versions
| 7.14.2 |
Sources
- osv: GHSA-94pj-82f3-465w
- https://github.com/guzzle/guzzle/security/advisories/GHSA-94pj-82f3-465w
- https://nvd.nist.gov/vuln/detail/CVE-2026-67339
- https://github.com/guzzle/guzzle/pull/3876
- https://github.com/guzzle/guzzle/commit/9e4580d4b9981e903dc6323fe37f50a96e85b05e
- https://github.com/guzzle/guzzle
- https://github.com/guzzle/guzzle/releases/tag/7.14.2
- https://www.vulncheck.com/advisories/guzzlehttp-guzzle-before-proxy-authorization-header-disclosure
CVE-2026-67339 · published · modified · JSON