CVE-2023-27478

Disclosure of unrelated data in libmemcached-awesome

MEDIUM
6.5
CVSS Score
Published: March 7, 2023 at 05:55 PM UTC
Updated: June 17, 2026 at 05:45 AM UTC
2 products affected across 2 vendorsLibmemcachedLibmemcached

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

libmemcached-awesome is an open source C/C++ client library and tools for the memcached server. `libmemcached` could return data for a previously requested key, if that previous request timed out due to a low `POLL_TIMEOUT`. This issue has been addressed in version 1.1.4. Users are advised to upgrade. There are several ways to workaround or lower the probability of this bug affecting a given deployment. 1: use a reasonably high `POLL_TIMEOUT` setting, like the default. 2: use separate libmemcached connections for unrelated data. 3: do not re-use libmemcached connections in an unknown state.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.0.18 ≤ v < 1.1.4
Affected range stops below 1.1.4, so it looks safe — our inference, not a vendor statement
v < 1.1.4
Affected range stops below 1.1.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200

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