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    CVE-2026-47783

    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.

    Published:May 20, 2026
    Last Modified:May 21, 2026
    EPS:May 20, 2026
    EPSS Score:0.00085
    CVSS Score:8.1

    Affected Products

    Vendor
    Memcached
    Product
    Memcached

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-208 Observable Timing Discrepancy

    Related CVEs

    CVE-2026-47784 (CVSS 8.1) — In memcached before 1.6.42, password data for SASL password database authentication has a timing side channel …
    CVE-2023-46853 (CVSS 9.8) — In Memcached before 1.6.22, an off-by-one error exists when processing proxy requests in proxy mode, if \n is …
    CVE-2023-46852 (CVSS 7.5) — In Memcached before 1.6.22, a buffer overflow exists when processing multiget requests in proxy mode, if there…
    CVE-2022-48571 (CVSS 7.5) — memcached 1.6.7 allows a Denial of Service via multi-packet uploads in UDP.…
    CVE-2020-22570 (CVSS 7.5) — Memcached 1.6.0 before 1.6.3 allows remote attackers to cause a denial of service (daemon crash) via a crafted…
    CVE-2021-37519 (CVSS 5.5) — Buffer Overflow vulnerability in authfile.c memcached 1.6.9 allows attackers to cause a denial of service via …
    CVE-2020-10931 (CVSS 7.5) — Memcached 1.6.x before 1.6.2 allows remote attackers to cause a denial of service (daemon crash) via a crafted…
    CVE-2019-15026 (CVSS 7.5) — memcached 1.5.16, when UNIX sockets are used, has a stack-based buffer over-read in conn_to_str in memcached.c…
    CVE-2019-11596 (CVSS 7.5) — In memcached before 1.5.14, a NULL pointer dereference was found in the "lru mode" and "lru temp_ttl" commands…
    CVE-2018-1000115 (CVSS 7.5) — Memcached version 1.5.5 contains an Insufficient Control of Network Message Volume (Network Amplification, CWE…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High