CVE-2026-3784
6.5
MEDIUM
CVSS 3.1
EPSS 0.03%
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.
How to fix CVE-2026-3784
To remediate CVE-2026-3784, upgrade the affected package to a fixed version below.
- Alpine/curl—upgrade to 8.19.0-r0 or later
- Debian/curl—no fix listed
Is CVE-2026-3784 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 8.19.0-r0
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |