Memory Exhaustion in SmtpResponseDecoder of Red Hat Products
CVE-2026-93563

7.5HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Apache Camel For Spring Boot 4
Red Hat Fuse 7
Red Hat Jboss Enterprise Application Platform 7
Red Hat Single Sign-on 7
Vendor
CVE Published:
18 September 2026

What is CVE-2026-93563?

A vulnerability in the SmtpResponseDecoder component allows for unbounded accumulation of multi-line responses, potentially leading to memory exhaustion and a denial-of-service condition. This can significantly impact the performance and availability of affected systems, making it crucial for users to apply necessary mitigations and updates.

References

https://access.redhat.com/security/cve/CVE-2026-93563
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2536976
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.