CVE-2026-47783
High
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.
SeverityHigh
CVSS8.1
Exploit probability70. percentile1.3%
ProductMemcached
PublishedMay 20, 2026
First seenMay 20, 2026
Weakness typeCWE-208CWE-208
How to fix
Update
- memcached memcached1.6.42 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| memcached memcached | v < 1.6.42 | 1.6.42 |
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