CVE-2026-3784

6.5 MEDIUM

Published: March 11, 2026 Modified: March 12, 2026

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://curl.se/docs/CVE-2026-3784.html

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

Patch Vendor Advisory

https://curl.se/docs/CVE-2026-3784.json

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

Vendor Advisory

https://hackerone.com/reports/3584903

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

Exploit Issue Tracking Third Party Advisory

http://www.openwall.com/lists/oss-security/2026/03/11/3

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing List Third Party Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score

6.5 / 10.0

EPSS (Exploit Probability)

0.0%

5th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-305

Affected Vendors

haxx

Related CVEs