CVE-2026-3784
Fixed in a distro release EPSS <1%CVSS 6.5
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.
Products: curl, Siemens RUGGEDCOM RST2428P
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.21 | curl | 8.14.1-r3 |
| Alpine 3.22 | curl | 8.14.1-r4 |
| Alpine 3.23 | curl | 8.19.0-r0 |
| Alpine 3.24 | curl | 8.19.0-r0 |
| Chainguard | libcurl4 | no fix |
| Debian 12 | curl | 7.88.1-10+deb12u15 |
| Debian 13 | curl | 8.14.1-2+deb13u4 |
| Debian 14 | curl | 8.19.0-1 |
| Red Hat Enterprise Linux 10.2 | curl | 0:8.12.1-4.el10_2.3 |
| Red Hat Enterprise Linux 10.2 | curl-debuginfo | 0:8.12.1-4.el10_2.3 |
| Red Hat Enterprise Linux 10.2 | curl-debugsource | 0:8.12.1-4.el10_2.3 |
| Red Hat Enterprise Linux 10.2 | libcurl | 0:8.12.1-4.el10_2.3 |
| Red Hat Enterprise Linux 10.2 | libcurl-debuginfo | 0:8.12.1-4.el10_2.3 |
| Red Hat Enterprise Linux 10.2 | libcurl-devel | 0:8.12.1-4.el10_2.3 |
| Red Hat Enterprise Linux 10.2 | libcurl-minimal | 0:8.12.1-4.el10_2.3 |
| Red Hat Enterprise Linux 10.2 | libcurl-minimal-debuginfo | 0:8.12.1-4.el10_2.3 |
| Red Hat Enterprise Linux eus 10.0 | curl | 0:8.12.1-1.el10_0.10 |
| Red Hat Enterprise Linux eus 10.0 | curl-debuginfo | 0:8.12.1-1.el10_0.10 |
| Red Hat Enterprise Linux eus 10.0 | curl-debugsource | 0:8.12.1-1.el10_0.10 |
| Red Hat Enterprise Linux eus 10.0 | libcurl | 0:8.12.1-1.el10_0.10 |
| Red Hat Enterprise Linux eus 10.0 | libcurl-debuginfo | 0:8.12.1-1.el10_0.10 |
| Red Hat Enterprise Linux eus 10.0 | libcurl-devel | 0:8.12.1-1.el10_0.10 |
| Red Hat Enterprise Linux eus 10.0 | libcurl-minimal | 0:8.12.1-1.el10_0.10 |
| Red Hat Enterprise Linux eus 10.0 | libcurl-minimal-debuginfo | 0:8.12.1-1.el10_0.10 |
| Red Hat hummingbird 1 | curl | 0:8.22.0-1.1.hum1 |
| Red Hat hummingbird 1 | curl | 0:8.19.0-3.hum1 |
| Red Hat hummingbird 1 | curl | 0:8.19.0-3.1.hum1 |
| Red Hat hummingbird 1 | libcurl | 0:8.19.0-3.1.hum1 |
| Red Hat hummingbird 1 | libcurl | 0:8.19.0-3.hum1 |
| Red Hat hummingbird 1 | libcurl | 0:8.22.0-1.1.hum1 |
| Red Hat hummingbird 1 | libcurl-devel | 0:8.19.0-3.hum1 |
| Red Hat hummingbird 1 | libcurl-devel | 0:8.19.0-3.1.hum1 |
| Red Hat hummingbird 1 | libcurl-devel | 0:8.22.0-1.1.hum1 |
| Red Hat hummingbird 1 | libcurl-minimal | 0:8.19.0-3.hum1 |
| Red Hat hummingbird 1 | libcurl-minimal | 0:8.19.0-3.1.hum1 |
| Red Hat hummingbird 1 | libcurl-minimal | 0:8.22.0-1.1.hum1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | curl | 8.14.1-150400.5.80.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | curl | 8.14.1-150400.5.80.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | curl | 8.14.1-150400.5.80.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | curl | 8.14.1-150400.5.80.1 |
| SUSE Linux Enterprise Installer Updates 15 SP4 | curl | 8.14.1-150400.5.80.1 |
| SUSE Linux Enterprise Installer Updates 15 SP5 | curl | 8.14.1-150400.5.80.1 |
| SUSE Linux Enterprise Micro 5.2 | curl | 8.14.1-150200.4.103.1 |
| SUSE Linux Enterprise Micro 5.3 | curl | 8.14.1-150400.5.80.1 |
| SUSE Linux Enterprise Micro 5.4 | curl | 8.14.1-150400.5.80.1 |
| SUSE Linux Enterprise Micro 5.5 | curl | 8.14.1-150400.5.80.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | curl | 8.14.1-150700.7.14.1 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | curl | 8.0.1-11.120.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | curl | 8.14.1-150400.5.80.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | curl | 8.14.1-150400.5.80.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | curl | 8.14.1-150600.4.40.1 |
| SUSE Linux Enterprise Server 16.0 | curl | 8.14.1-160000.5.1 |
| SUSE Linux Enterprise Server 16.0 | curl-mini | 8.14.1-160000.5.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | curl | 8.0.1-11.120.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | curl | 8.14.1-150600.4.40.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | curl | 8.14.1-160000.5.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | curl-mini | 8.14.1-160000.5.1 |
| SUSE Linux Micro 6.0 | curl | 8.14.1-5.1 |
| SUSE Linux Micro 6.1 | curl | 8.14.1-slfo.1.1_6.1 |
| SUSE Linux Micro 6.2 | curl | 8.14.1-160000.5.1 |
| Ubuntu 22.04 LTS | curl | 7.81.0-1ubuntu1.23 |
| Ubuntu 24.04 LTS | curl | 8.5.0-2ubuntu10.8 |
| Ubuntu 25.10 | curl | 8.14.1-2ubuntu1.2 |
| Ubuntu 26.04 LTS | curl | 8.18.0-1ubuntu2 |
| Ubuntu 26.10 | curl | 8.18.0-1ubuntu2 |
| Ubuntu Pro 18.04 LTS | curl | 7.58.0-2ubuntu3.24+esm8 |
| Ubuntu Pro 20.04 LTS | curl | 7.68.0-1ubuntu2.25+esm3 |
| Wolfi | libcurl4 | no fix |
| openSUSE Leap 15.6 | curl | 8.14.1-150600.4.40.1 |
| openSUSE Leap 16.0 | curl | 8.14.1-160000.5.1 |
| openSUSE Tumbleweed | curl | 8.19.0-1.1 |