Skip to content
OpenAdvisories
Medium · 5.3 CVE-2026-6429 EUVD-2026-29930GHSA-2pvc-5qw9-h3ph

netrc credential leak with reused proxy connection

Published May 13, 2026 · Updated Sep 15, 2026 · Assigned by curl

Description

When asked to both use a `.netrc` file for credentials and to follow HTTP
redirects, libcurl could leak the password used for the first host to the
followed-to host under certain circumstances.

Affected products

VendorProductAffectedFixed
curl curl 7.14.0 – < 8.14.2, 8.15.0 – < 8.16.1, 8.17.0 – < 8.20.0, 8.19.0, 8.18.0, 8.17.0, 8.16.0, 8.15.0, 8.14.1, 8.14.0, 8.13.0, 8.12.1, 8.12.0, 8.11.1, 8.11.0, 8.10.1, 8.10.0, 8.9.1, 8.9.0, 8.8.0, 8.7.1, 8.7.0, 8.6.0, 8.5.0, 8.4.0, 8.3.0, 8.2.1, 8.2.0, 8.1.2, 8.1.1, 8.1.0, 8.0.1, 8.0.0, 7.88.1, 7.88.0, 7.… 8.14.2

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 curl 8.20.0~rc3-1 —
Debian 13 curl 8.14.1-2+deb13u4 —
Debian 12 curl No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.04 LTS curl 8.18.0-1ubuntu2.1 —
Ubuntu 25.10 curl 8.14.1-2ubuntu1.3 —
Ubuntu 24.04 LTS curl 8.5.0-2ubuntu10.9 —
Ubuntu 22.04 LTS curl 7.81.0-1ubuntu1.24 —
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 20.04 LTS curl No fix yet —
Ubuntu Pro 18.04 LTS curl No fix yet —
Ubuntu Pro 16.04 LTS curl No fix yet —
Ubuntu Pro 14.04 LTS curl No fix yet —
ReleasePackageFixed inAdvisory
RHEL 10 curl +3 8.12.1-4.el10_2.7 RHSA-2026:80512
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Red Hat Hardened Images 1 curl +3 8.20.0-0.1.hum1 RHSA-2026:12916

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 10 curl +3 8.12.1-4.el10_2.7 ALSA-2026:80512

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 10 curl 8.12.1-4.el10_2.7 RLSA-2026:80512
ReleasePackageFixed inAdvisory
SLES 15 SP7 curl 8.14.1-150700.7.23.1 SUSE-SU-2026:3798-1
SLES 12 SP5 curl 8.0.1-11.123.1 SUSE-SU-2026:2703-1
Show 3 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 16.0 curl +1 8.14.1-160000.6.1 SUSE-SU-2026:22156-1
SLES 16.0 curl +1 8.14.1-160000.6.1 SUSE-SU-2026:22156-1
SLE Micro 6.2 curl 8.14.1-160000.6.1 SUSE-SU-2026:22146-1
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed curl 8.20.0-1.1 openSUSE-SU-2026:10674-1
openSUSE Leap 16.0 curl 8.14.1-160000.6.1 openSUSE-SU-2026:20973-1
ReleasePackageFixed inAdvisory
Alpine v3.24 curl 8.20.0-r0 —
Alpine v3.23 curl 8.20.0-r0 —
Alpine v3.22 curl 8.14.1-r4 —
Alpine v3.21 curl 8.14.1-r3 —

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 cmake 3.30.3-14 —
Azure Linux 3 curl 8.11.1-9 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 10 curl +3 8.12.1-4.el10_2.7 ELSA-2026-80512

Advisories 13

References