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OpenAdvisories
Critical · 9.8 CVE-2026-9079 EUVD-2026-41510GHSA-f4cv-xm48-3694

stale proxy password leak

Published Jul 3, 2026 · Updated Sep 15, 2026 · Assigned by curl

Vendor: curl Product: curl Package: cmake Package: curl Package: curl Package: curl Package: curl Ecosystem: Alpine Ecosystem: Azure Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

libcurl had a flaw that when instructed to clear proxy authentication
credentials which made it not do so, leaving the old credentials around to get
used for subsequent transfers that should not know nor use them.

Affected products

VendorProductAffectedFixed
curl curl 8.8.0 – < 8.14.2, 8.15.0 – < 8.16.1, 8.17.0 – < 8.20.1, 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 8.14.2

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.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 curl 8.21.0~rc2-1 —
Debian 13 curl No fix yet —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 26.04 LTS curl 8.18.0-1ubuntu2.2 —
Ubuntu 25.10 curl 8.14.1-2ubuntu1.4 —

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
RHEL 10 curl +3 8.12.1-4.el10_2.6 RHSA-2026:69125
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 10.0 EUS curl +3 8.12.1-1.el10_0.10 RHSA-2026:72506
Red Hat Hardened Images 1 curl +3 8.21.0-0.1.hum1 RHSA-2026:29017
Red Hat Hardened Images 1 rust +18 1.96.1-1.hum1 RHSA-2026:34975

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 10 curl +3 8.12.1-4.el10_2.6 ALSA-2026:69125

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 10 curl 8.12.1-4.el10_2.6 RLSA-2026:69125

SUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
SLES 15 SP7 curl 8.14.1-150700.7.20.1 SUSE-SU-2026:2925-1
SLES 15 SP6 curl 8.14.1-150600.4.46.1 SUSE-SU-2026:2926-1
SLES 15 SP5 curl 8.14.1-150400.5.86.1 SUSE-SU-2026:3043-1
SLES 15 SP4 curl 8.14.1-150400.5.86.1 SUSE-SU-2026:3043-1
Show 13 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 16.0 curl +1 8.14.1-160000.8.1 SUSE-SU-2026:22582-1
SLES for SAP 15 SP6 curl 8.14.1-150600.4.46.1 SUSE-SU-2026:2926-1
SLES 16.0 curl +1 8.14.1-160000.8.1 SUSE-SU-2026:22582-1
SLE Micro 6.2 curl 8.14.1-160000.8.1 SUSE-SU-2026:22553-1
SLE Micro 6.1 curl 8.14.1-slfo.1.1_8.1 SUSE-SU-2026:22889-1
SLE Micro 6.0 curl 8.14.1-7.1 SUSE-SU-2026:22709-1
SLE Micro 5.5 curl 8.14.1-150400.5.86.1 SUSE-SU-2026:3043-1
SLE Micro 5.4 curl 8.14.1-150400.5.86.1 SUSE-SU-2026:3043-1
SLE Micro 5.3 curl 8.14.1-150400.5.86.1 SUSE-SU-2026:3043-1
SLE HPC 15 SP5 curl 8.14.1-150400.5.86.1 SUSE-SU-2026:3043-1
SLE HPC 15 SP4 curl 8.14.1-150400.5.86.1 SUSE-SU-2026:3043-1
SUSE Linux Enterprise Installer Updates 15 SP5 curl 8.14.1-150400.5.86.1 SUSE-SU-2026:3043-1
SUSE Linux Enterprise Installer Updates 15 SP4 curl 8.14.1-150400.5.86.1 SUSE-SU-2026:3043-1

openSUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed curl 8.21.0-1.1 openSUSE-SU-2026:11230-1
openSUSE Leap 16.0 curl 8.14.1-160000.8.1 openSUSE-SU-2026:21272-1

Alpine

Security tracker ↗
ReleasePackageFixed inAdvisory
Alpine v3.24 curl 8.21.0-r0 —
Alpine v3.23 curl 8.22.0-r0 —

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 curl +4 8.21.0-5.amzn2023.0.1 ALAS2023-2026-2132

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 cmake 3.30.3-15 —
Azure Linux 3 curl 8.11.1-10 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 10 curl +3 8.12.1-4.el10_2.6 ELSA-2026-69125

Advisories 20

References