CVE-2026-47783
Fixed in a distro release EPSS 1%CVSS 8.1
In memcached before 1.6.42, username data for SASL password database authentication has a timing side channel because a loop exits as soon as a valid username is found by sasl_server_userdb_checkpass.
Products: Memcached, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Hardened Images
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | memcached | 1.6.23-7.el10_2.1 |
| AlmaLinux 10 | memcached-selinux | 1.6.23-7.el10_2.1 |
| AlmaLinux 9 | memcached | 1.6.9-7.el9_8.1 |
| AlmaLinux 9 | memcached-selinux | 1.6.9-7.el9_8.1 |
| Amazon Linux 2023 | memcached | 1.6.42-2.amzn2023.0.1 |
| Amazon Linux 2023 | memcached-devel | 1.6.42-2.amzn2023.0.1 |
| Amazon Linux 2023 | memcached-selinux | 1.6.42-2.amzn2023.0.1 |
| Debian 12 | memcached | 1.6.18-1+deb12u1 |
| Debian 13 | memcached | no fix |
| Debian 14 | memcached | 1.6.42-1 |
| Red Hat Enterprise Linux 10.2 | memcached | 0:1.6.23-7.el10_2.1 |
| Red Hat Enterprise Linux 10.2 | memcached-debuginfo | 0:1.6.23-7.el10_2.1 |
| Red Hat Enterprise Linux 10.2 | memcached-debugsource | 0:1.6.23-7.el10_2.1 |
| Red Hat Enterprise Linux 10.2 | memcached-selinux | 0:1.6.23-7.el10_2.1 |
| Red Hat Enterprise Linux 9 | memcached | 0:1.6.9-7.el9_8.1 |
| Red Hat Enterprise Linux 9 | memcached-debuginfo | 0:1.6.9-7.el9_8.1 |
| Red Hat Enterprise Linux 9 | memcached-debugsource | 0:1.6.9-7.el9_8.1 |
| Red Hat Enterprise Linux 9 | memcached-selinux | 0:1.6.9-7.el9_8.1 |
| Red Hat hummingbird 1 | memcached | 0:1.6.45-1.hum1 |
| Red Hat hummingbird 1 | memcached-devel | 0:1.6.45-1.hum1 |
| Red Hat hummingbird 1 | memcached-selinux | 0:1.6.45-1.hum1 |
| Rocky Linux 10 | memcached | 0:1.6.23-7.el10_2.1 |
| Rocky Linux 9 | memcached | 0:1.6.9-7.el9_8.1 |
| SUSE Linux Enterprise Server 16.0 | memcached | 1.6.38-160000.3.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | memcached | 1.6.38-160000.3.1 |
| Ubuntu 20.04 LTS | memcached | no fix |
| Ubuntu 22.04 LTS | memcached | 1.6.14-1ubuntu0.2 |
| Ubuntu 24.04 LTS | memcached | 1.6.24-1ubuntu0.1 |
| Ubuntu 25.10 | memcached | 1.6.38-1ubuntu0.1 |
| Ubuntu 26.04 LTS | memcached | 1.6.40-1ubuntu0.1 |
| Ubuntu Pro 16.04 LTS | memcached | no fix |
| Ubuntu Pro 18.04 LTS | memcached | no fix |
| openSUSE Tumbleweed | memcached | 1.6.42-1.1 |