CVE-2026-47783

Published: May 20, 2026Modified: Jul 24, 2026

8.1

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 2.2 / Impact: 5.9

Source: MITRE (Secondary)

Description

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.

Affected (1)

Products: Memcached: Memcached

Memcached

1 product

Memcached

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Memcached Memcached	Before 1.6.42

Related CWEs

CWE-208

Observable Timing Discrepancy

Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.

References (8)

https://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fed

Source: cve@mitre.org

Patch

https://github.com/memcached/memcached/compare/1.6.41...1.6.42

Source: cve@mitre.org

Release Notes

https://github.com/memcached/memcached/wiki/ReleaseNotes1642

Source: cve@mitre.org

Release Notes

https://access.redhat.com/errata/RHSA-2026:27842