Denial-of-Service Vulnerability in HashiCorp Memberlist
CVE-2026-14362

4.9MEDIUM

Key Information:

Vendor

Hashicorp
Status
Shared Library
Vendor
CVE Published:
8 July 2026

What is CVE-2026-14362?

The HashiCorp Memberlist library prior to version 0.6.0 is affected by a denial-of-service vulnerability. This issue arises from improper handling of state in its push/pull mechanism. An attacker with network access to the gossip port can exploit this flaw by sending malicious messages, which may lead to excessive memory consumption on the target node. As a result, this can cause the process to terminate unexpectedly, disrupting service availability. Upgrading to version 0.6.0 or later is recommended to mitigate this risk.

Affected Version(s)

Shared library 64 bit 0.1.5 < 0.6.0

References

https://discuss.hashicorp.com/t/hcsec-2026-18-memberlist-...

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was reported to HashiCorp by Andy Gill of ZephrSec.
.