Bug 2480089 (CVE-2026-47783) - CVE-2026-47783 memcached: memcached: Username enumeration via timing side channel
Summary: CVE-2026-47783 memcached: memcached: Username enumeration via timing side cha...
Keywords:
Status: NEW
Alias: CVE-2026-47783
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2481843
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-20 07:01 UTC by OSIDB Bzimport
Modified: 2026-06-22 12:35 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:27842 0 None None None 2026-06-22 11:36:48 UTC
Red Hat Product Errata RHSA-2026:27862 0 None None None 2026-06-22 12:35:42 UTC

Description OSIDB Bzimport 2026-05-20 07:01:18 UTC 
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.
Comment 2 errata-xmlrpc 2026-06-22 11:36:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:27842 https://access.redhat.com/errata/RHSA-2026:27842
Comment 3 errata-xmlrpc 2026-06-22 12:35:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:27862 https://access.redhat.com/errata/RHSA-2026:27862
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