CVE-2026-47783 | BDVDB-2026-334262 Detail
memcachedmemcached
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.
Weaknesses#
- CWE-208 Observable Timing Discrepancy
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
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.