| Name | CVE-2026-47783 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4601-1 |
| Debian Bugs | 1137214 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| memcached (PTS) | bullseye | 1.6.9+dfsg-1 | vulnerable |
| bullseye (security) | 1.6.9+dfsg-1+deb11u1 | fixed |
| bookworm | 1.6.18-1 | vulnerable |
| trixie | 1.6.38-1 | vulnerable |
| forky, sid | 1.6.42-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[trixie] - memcached <no-dsa> (Minor issue)
Fixed by: https://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fed (1.6.42)