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TI-2026-35276 Aliases CVE-2026-47783GHSA-qjpx-j6j4-8xpr

In memcached before 1.6.42, username data for SASL password database authentication has a…

Priority MEDIUM 40CWE-208Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-208.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01264 69th percentileScored 2026-11-07
Fix Fixed memcached (memcached): 1.6.42Red Hat: 3 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Memcachedmemcachedbefore 1.6.421.6.42Patch availableCNA
  • memcached VendorMemcached Affected before 1.6.42 Fixed in 1.6.42 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:*before 1.6.42VulnerableMemcached
  • cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:* Versions before 1.6.42 Vulnerable ·Memcached

Remediation

  • Fix · CNA memcached (memcached) Fixed in 1.6.42

Red Hat 3 advisories

  • RHSA-2026:63224 Released 2026-09-03 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images memcached-1.6.45-1.hum1@aarch64, memcached-1.6.45-1.hum1@src, memcached-1.6.45-1.hum1@x86_64 +4
  • RHSA-2026:27862 Released 2026-06-22 · Red Hat rating Important
    memcached security update
    • Red Hat Enterprise Linux AppStream (v. 9) memcached-1.6.9-7.el9_8.1, memcached-selinux-1.6.9-7.el9_8.1
  • RHSA-2026:27842 Released 2026-06-22 · Red Hat rating Important
    memcached security update
    • Red Hat Enterprise Linux AppStream (v. 10) memcached-1.6.23-7.el10_2.1, memcached-selinux-1.6.23-7.el10_2.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    memcached 1.6.42

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-35277 In memcached before 1.6.42, password data for SASL password database authentication has a…Priority LOW 38
    Show all 2 records →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:27842
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:27862
Red Hat Hardened ImagesFixed RHSA-2026:63224
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-47783
  2. 2026-10-03 Alias added: GHSA-qjpx-j6j4-8xpr

References

Patch 1

Other 2

  • TI-2018-15768 Memcached version 1.5.5 contains an Insufficient Control of Network Message Volume… CVSS 3.0HIGH 7.5
  • TI-2020-14353 Memcached 1.6.0 before 1.6.3 allows remote attackers to cause a denial of service (daemon… CVSS 3.1HIGH 7.5
  • TI-2016-07164 Integer overflow in Memcached CVSS 3.0HIGH 8.1
  • TI-2016-07162 Integer overflow in Memcached CVSS 3.0CRITICAL 9.8
  • TI-2016-07163 Integer overflow in Memcached CVSS 3.0CRITICAL 9.8
  • TI-2021-15418 Buffer Overflow vulnerability in authfile.c memcached 1.6.9 allows attackers to cause a… CVSS 3.1MEDIUM 5.5
See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences