CVE-2026-47783
- State
- Published
- Severity
- 8.1 High
- Published
- May 20, 2026
- Updated
- Sep 18, 2026
- Reserved
- May 20, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | mitre |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | redhat-SADP |
Weaknesses
- CWE-208 Observable Timing Discrepancy
Affected Products
| Product | Versions |
|---|---|
memcachedmemcached |
|
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-2026-47783vdb-entry
- RHBZ#2480089issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-47783.json
- https://access.redhat.com/errata/RHSA-2026:27842vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:27862vendor-advisory
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