CVE-2026-67339
CVE-2026-67339 · guzzlehttp/guzzle before 7.14.2 Proxy-Authorization Header Disclosure
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.9 · Medium · EPSS 0.4% · Fix available
- Published
- Updated
Affected products and versions
guzzle
- Versions
- ≥ 0, < 7.14.2: Affected (semver)
- 7.14.2: Not affected (semver)
Update to 7.14.2
guzzle Debian:12
- Versions
- 7.11.0-1
- 7.12.0-1
- 7.12.1-1
- 7.12.3-1
- 7.13.1-1
- 7.14.0-1
- 7.14.1-1
- 7.14.2-1
- 7.15.0-1
- 7.15.1-1
- 7.15.2-1
- 7.15.3-1
- 7.15.5-1
- 7.4.5-1
- 7.9.2-0.1
- 8.0.1-1
- 8.0.2-1
- 8.1.0-1
- 8.2.0-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
guzzle Debian:13
- Versions
- 7.11.0-1
- 7.12.0-1
- 7.12.1-1
- 7.12.3-1
- 7.13.1-1
- 7.14.0-1
- 7.14.1-1
- 7.14.2-1
- 7.15.0-1
- 7.15.1-1
- 7.15.2-1
- 7.15.3-1
- 7.15.5-1
- 7.9.2-0.1
- 8.0.1-1
- 8.0.2-1
- 8.1.0-1
- 8.2.0-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
guzzle Debian:14
- Versions
- 7.11.0-1
- 7.12.0-1
- 7.12.1-1
- 7.12.3-1
- 7.13.1-1
- 7.14.0-1
- 7.14.1-1
- 7.9.2-0.1
- Affected ranges
- ECOSYSTEM: < 7.14.2-1
Update to 7.14.2-1
guzzlehttp/guzzle Packagist
- Versions
- 4.0.0
- 4.0.0-rc.1
- 4.0.0-rc.2
- 4.0.1
- 4.0.2
- 4.1.0
- 4.1.1
- 4.1.2
- 4.1.3
- 4.1.4
- 4.1.5
- 4.1.6
- 4.1.7
- 4.1.8
- 4.2.0
- 4.2.1
- 4.2.2
- 4.2.3
- 4.2.4
- 5.0.0
- 5.0.1
- 5.0.2
- 5.0.3
- 5.1.0
- 5.2.0
- 5.3.0
- 5.3.1
- 5.3.2
- 5.3.3
- 5.3.4
- 6.0.0
- 6.0.1
- 6.0.2
- 6.1.0
- 6.1.1
- 6.2.0
- 6.2.1
- 6.2.2
- 6.2.3
- 6.3.0
- 6.3.1
- 6.3.2
- 6.3.3
- 6.4.0
- 6.4.1
- 6.5.0
- 6.5.1
- 6.5.2
- 6.5.3
- 6.5.4
- 6.5.5
- 6.5.6
- 6.5.7
- 6.5.8
- 7.0.0
- 7.0.0-beta.1
- 7.0.0-beta.2
- 7.0.0-rc.1
- 7.0.1
- 7.1.0
- 7.1.1
- 7.10.0
- 7.10.1
- 7.10.2
- 7.10.3
- 7.10.4
- 7.10.5
- 7.10.6
- 7.11.0
- 7.11.1
- 7.11.2
- 7.12.0
- 7.12.1
- 7.12.2
- 7.12.3
- 7.13.0
- 7.13.1
- 7.13.2
- 7.13.3
- 7.14.0
- 7.14.1
- 7.2.0
- 7.3.0
- 7.4.0
- 7.4.1
- 7.4.2
- 7.4.3
- 7.4.4
- 7.4.5
- 7.5.0
- 7.5.1
- 7.5.2
- 7.5.3
- 7.6.0
- 7.6.1
- 7.7.0
- 7.7.1
- 7.8.0
- 7.8.1
- 7.8.2
- 7.9.0
- 7.9.1
- 7.9.2
- 7.9.3
- v1.0.3
- v1.0.4
- v2.0.0
- v2.0.1
- v2.0.2
- v2.0.3
- v2.0.4
- v2.0.5
- v2.1.0
- v2.1.1
- v2.1.2
- v2.1.3
- v2.1.4
- v2.2.0
- v2.2.1
- v2.2.2
- v2.2.3
- v2.2.4
- v2.3.2
- v2.4.0
- v2.4.1
- v2.5.0
- v2.6.0
- v2.6.1
- v2.6.2
- v2.6.3
- v2.6.4
- v2.6.5
- v2.6.6
- v2.7.0
- v2.7.1
- v2.7.2
- v2.8.0
- v2.8.1
- v2.8.2
- v2.8.3
- v2.8.4
- v2.8.5
- v2.8.6
- v2.8.7
- v2.8.8
- v3.0.0
- v3.0.1
- v3.0.2
- v3.0.3
- v3.0.4
- v3.0.5
- v3.0.6
- v3.0.7
- v3.1.0
- v3.1.1
- v3.1.2
- v3.2.0
- v3.3.0
- v3.3.1
- v3.4.0
- v3.4.1
- v3.4.2
- v3.4.3
- v3.5.0
- v3.6.0
- v3.7.0
- v3.7.1
- v3.7.2
- v3.7.3
- v3.7.4
- v3.8.0
- v3.8.1
- Affected ranges
- ECOSYSTEM: < 7.14.2
Update to 7.14.2
guzzle Ubuntu:24.04:LTS
- Versions
- 7.4.5-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
guzzle Ubuntu:26.10
- Versions
- 7.9.2-0.1build1
- 7.13.1-1
- 7.15.1-1
- 7.15.2-1
- 7.15.3-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
guzzle Ubuntu:26.04:LTS
- Versions
- 7.9.2-0.1
- 7.9.2-0.1build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published