TI-2026-35277 Aliases CVE-2026-47784 GHSA-r4h3-4q3v-2776

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

LOW 38CWE-208Published 2026-05-20 · Updated 2026-05-20

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: Partial Red Hat: 1 fixed, 5 without a fix

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, password data for SASL password database authentication has a timing side channel because memcmp is used by sasl_server_userdb_checkpass.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0055 46th percentileScored 2026-11-07

Fix Partial memcached (memcached): 1.6.42Red Hat: 1 advisoryRed Hat: 1 fixed, 5 without a fix

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

Vendor	Product	Affected versions	Fixed in	Status	Source
Memcached	memcached	before 1.6.42	1.6.42	Patch available	CNA

memcached VendorMemcached Affected before 1.6.42 Fixed in 1.6.42 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:memcached:memcached::::::::	before 1.6.42	Vulnerable	Memcached

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 1 advisory

RHSA-2026:23261 Released 2026-06-04 · Red Hat rating Moderate
Red Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images memcached-1.6.42-0.1.hum1@aarch64, memcached-1.6.42-0.1.hum1@src, memcached-1.6.42-0.1.hum1@x86_64 +4

Fixed in the same release

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

Release · 2026-05-20
memcached 1.6.42
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-35276 In memcached before 1.6.42, username data for SASL password database authentication has a…Priority MEDIUM 40
Show all 2 records →

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 6	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 7	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred
Red Hat Hardened Images	Fixed	RHSA-2026:23261

Timeline

2026-10-02 Threatist record created from CVE-2026-47784
2026-10-03 Alias added: GHSA-r4h3-4q3v-2776

References

Patch 1

https://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fed

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