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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
memcached memcached
Default version status: unaffected
0 to < 1.6.42affected
References
- https://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fed ↗
- https://github.com/memcached/memcached/compare/1.6.41...1.6.42 ↗
- https://github.com/memcached/memcached/wiki/ReleaseNotes1642 ↗
- https://access.redhat.com/security/cve/CVE-2026-47783 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2480089 ↗
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-47783.json ↗
- https://access.redhat.com/errata/RHSA-2026:27842 ↗
- https://access.redhat.com/errata/RHSA-2026:27862 ↗