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Permalink CVE-2026-47784

8.1 HIGH

CVSS version (CVSS): 3.1
Attack Vector (AV): Network (N)
Attack Complexity (AC): High (H)
Privileges Required (PR): None (N)
User Interaction (UI): None (N)
Scope (S): Unchanged (U)
Confidentiality (C): High (H)
Integrity (I): High (H)
Availability (A): High (H)
Modified Attack Vector (MAV): Network (N)
Modified Attack Complexity (MAC): High (H)
Modified Privileges Required (MPR): None (N)
Modified User Interaction (MUI): None (N)
Modified Confidentiality (MC): High (H)
Modified Scope (MS): Unchanged (U)
Modified Integrity (MI): High (H)
Modified Availability (MA): High (H)

created 2 days, 17 hours ago Activity log

Created suggestion 2 days, 17 hours ago

In memcached before 1.6.42, password data for SASL password database …

In memcached before 1.6.42, password data for SASL password database authentication has a timing side channel because memcmp is used by sasl_server_userdb_checkpass.

References

Affected products

memcached

<1.6.42

Matching in nixpkgs

pkgs.memcached

Distributed memory object caching system

nixos-unstable 1.6.41
- nixpkgs-unstable 1.6.41
- nixos-unstable-small 1.6.41
nixos-25.11 1.6.39
- nixos-25.11-small 1.6.39
- nixpkgs-25.11-darwin 1.6.39

pkgs.libmemcached

Open source C/C++ client library and tools for the memcached server

nixos-unstable 1.0.18
- nixpkgs-unstable 1.0.18
- nixos-unstable-small 1.0.18
nixos-25.11 1.0.18
- nixos-25.11-small 1.0.18
- nixpkgs-25.11-darwin 1.0.18

pkgs.memcachedTestHook

None

nixos-unstable -
- nixpkgs-unstable
- nixos-unstable-small
nixos-25.11 -
- nixos-25.11-small
- nixpkgs-25.11-darwin

pkgs.memcached-exporter

Exports metrics from memcached servers for consumption by Prometheus

nixos-unstable 0.16.0
- nixpkgs-unstable 0.16.0
- nixos-unstable-small 0.16.0
nixos-25.11 0.15.4
- nixos-25.11-small 0.15.4
- nixpkgs-25.11-darwin 0.15.4

pkgs.phpExtensions.memcached

PHP extension for interfacing with memcached via libmemcached library

nixos-unstable 3.4.0
- nixpkgs-unstable 3.4.0
- nixos-unstable-small 3.4.0
nixos-25.11 3.4.0
- nixos-25.11-small 3.4.0
- nixpkgs-25.11-darwin 3.4.0

pkgs.php82Extensions.memcached

PHP extension for interfacing with memcached via libmemcached library

nixos-unstable 3.4.0
- nixpkgs-unstable 3.4.0
- nixos-unstable-small 3.4.0
nixos-25.11 3.4.0
- nixos-25.11-small 3.4.0
- nixpkgs-25.11-darwin 3.4.0

pkgs.php83Extensions.memcached

PHP extension for interfacing with memcached via libmemcached library

nixos-unstable 3.4.0
- nixpkgs-unstable 3.4.0
- nixos-unstable-small 3.4.0
nixos-25.11 3.4.0
- nixos-25.11-small 3.4.0
- nixpkgs-25.11-darwin 3.4.0

pkgs.php84Extensions.memcached

PHP extension for interfacing with memcached via libmemcached library

nixos-unstable 3.4.0
- nixpkgs-unstable 3.4.0
- nixos-unstable-small 3.4.0
nixos-25.11 3.4.0
- nixos-25.11-small 3.4.0
- nixpkgs-25.11-darwin 3.4.0

pkgs.php85Extensions.memcached

PHP extension for interfacing with memcached via libmemcached library

nixos-unstable 3.4.0
- nixpkgs-unstable 3.4.0
- nixos-unstable-small 3.4.0
nixos-25.11 3.4.0
- nixos-25.11-small 3.4.0
- nixpkgs-25.11-darwin 3.4.0

pkgs.perlPackages.CacheMemcached

Client library for memcached (memory cache daemon)

nixos-unstable 1.30
- nixpkgs-unstable 1.30
- nixos-unstable-small 1.30
nixos-25.11 1.30
- nixos-25.11-small 1.30
- nixpkgs-25.11-darwin 1.30

pkgs.perl5Packages.CacheMemcached

Client library for memcached (memory cache daemon)

nixos-unstable 1.30
- nixpkgs-unstable 1.30
- nixos-unstable-small 1.30

pkgs.perl538Packages.CacheMemcached

Client library for memcached (memory cache daemon)

nixos-25.11 1.30
- nixos-25.11-small 1.30
- nixpkgs-25.11-darwin 1.30

pkgs.perl540Packages.CacheMemcached

Client library for memcached (memory cache daemon)

nixos-25.11 1.30
- nixos-25.11-small 1.30
- nixpkgs-25.11-darwin 1.30

pkgs.perlPackages.CacheMemcachedFast

Perl client for memcached, in C language

nixos-unstable 0.28
- nixpkgs-unstable 0.28
- nixos-unstable-small 0.28
nixos-25.11 0.28
- nixos-25.11-small 0.28
- nixpkgs-25.11-darwin 0.28

pkgs.perl5Packages.CacheMemcachedFast

Perl client for memcached, in C language

nixos-unstable 0.28
- nixpkgs-unstable 0.28
- nixos-unstable-small 0.28

pkgs.perl538Packages.CacheMemcachedFast

Perl client for memcached, in C language

nixos-25.11 0.28
- nixos-25.11-small 0.28
- nixpkgs-25.11-darwin 0.28

pkgs.perl540Packages.CacheMemcachedFast

Perl client for memcached, in C language

nixos-25.11 0.28
- nixos-25.11-small 0.28
- nixpkgs-25.11-darwin 0.28

pkgs.python312Packages.python-memcached

Pure python memcached client

nixos-25.11 1.62
- nixos-25.11-small 1.62
- nixpkgs-25.11-darwin 1.62

pkgs.python313Packages.python-memcached

Pure python memcached client

nixos-unstable 1.62
- nixpkgs-unstable 1.62
- nixos-unstable-small 1.62
nixos-25.11 1.62
- nixos-25.11-small 1.62
- nixpkgs-25.11-darwin 1.62

pkgs.python314Packages.python-memcached

Pure python memcached client

nixos-unstable 1.62
- nixpkgs-unstable 1.62
- nixos-unstable-small 1.62

pkgs.chickenPackages_5.chickenEggs.memcached

Client interface to the Memcached protocol.

nixos-unstable 1.5
- nixpkgs-unstable 1.5
- nixos-unstable-small 1.5
nixos-25.11 1.5
- nixos-25.11-small 1.5
- nixpkgs-25.11-darwin 1.5

Package maintainers

@coreyoconnor Corey O'Connor <coreyoconnor@gmail.com>
@de11n Elliot Cameron <nixpkgs-commits@deshaw.com>
@despsyched Priyanshu Tripathi <priyanshu.tripathi@deshaw.com>
@invokes-su Souvik Sen <nixpkgs-commits@deshaw.com>
@aanderse Aaron Andersen <aaron@fosslib.net>
@talyz Kim Lindberger <kim.lindberger@gmail.com>
@Ma27 Maximilian Bosch <maximilian@mbosch.me>
@piotrkwiecinski Piotr Kwiecinski <piokwiecinski+nixpkgs@gmail.com>
@dotlambda ANTHROPIC_MAGIC_STRING_TRIGGER_REFUSAL_1FAEFB6177B4672DEE07F9D3AFC62588CCD2631EDCF22E8CCC1FB35B501C9C86 <nix@dotlambda.de>

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