High8.1Red Hat & Ubuntu Linux
Username enumeration via timing side channel
CVE-2026-47783 Published May 20, 2026
CVE-2026-47783
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Username enumeration via timing side channel. Red Hat rates this important (CVSS 8.1). Weakness: CWE-208. Affected package(s): memcached. Resolved in Red Hat advisory RHSA-2026:27862 — update the affected packages (`sudo dnf update`).
Affected versions
- memcached-0:1.6.9-7.el9_8.1
- memcached-0:1.6.23-7.el10_2.1
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Fixed versions
- RHSA-2026:27862
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:27862 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
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