High severity · published May 20, 2026
CVE-2026-47784
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
8.1
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ME
memcached · memcached
before 1.6.42 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47784
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47784
Patch
https://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fed
Release Notes
https://github.com/memcached/memcached/compare/1.6.41...1.6.42
Release Notes
https://github.com/memcached/memcached/wiki/ReleaseNotes1642
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