curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a
server, even if the new request uses different credentials for the HTTP proxy.
The proper behavior is to create or use a separate connection.
References
| Link | Resource |
|---|---|
| https://curl.se/docs/CVE-2026-3784.html | Patch Vendor Advisory |
| https://curl.se/docs/CVE-2026-3784.json | Vendor Advisory |
| https://hackerone.com/reports/3584903 | Exploit Issue Tracking Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2026/03/11/3 | Mailing List Third Party Advisory |
Configurations
History
12 Mar 2026, 14:09
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Haxx curl
Haxx |
|
| CPE | cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* | |
| References | () https://curl.se/docs/CVE-2026-3784.html - Patch, Vendor Advisory | |
| References | () https://curl.se/docs/CVE-2026-3784.json - Vendor Advisory | |
| References | () https://hackerone.com/reports/3584903 - Exploit, Issue Tracking, Third Party Advisory | |
| References | () http://www.openwall.com/lists/oss-security/2026/03/11/3 - Mailing List, Third Party Advisory |
11 Mar 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
| CWE | CWE-305 |
11 Mar 2026, 11:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-03-11 11:16
Updated : 2026-03-12 14:09
NVD link : CVE-2026-3784
Mitre link : CVE-2026-3784
CVE.ORG link : CVE-2026-3784
JSON object : View
Products Affected
haxx
- curl
CWE
CWE-305
Authentication Bypass by Primary Weakness