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CVE-2026-47783

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.

Published: May 20, 2026Updated: May 20, 2026 Sources: CVE List NVD
NVD MITRE
8.1CVSS
HIGH

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.

EPSS Score
0.1%
Top 83.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

CWE-208

Affected Products

memcached
memcached

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fed
github.com
https://github.com/memcached/memcached/compare/1.6.41...1.6.42
github.com
https://github.com/memcached/memcached/wiki/ReleaseNotes1642
github.com

Timeline

Published
May 20, 2026
Last Updated
May 20, 2026

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