CVE-2025-8396: Medium severity Temporal OSS Server vulnerability
Insufficiently specific bounds checking on authorization header could lead to denial of service in the Temporal server on all platforms due to excessive memory allocation. This issue affects all platforms and versions of OSS Server prior to 1.26.3, 1.27.3, and 1.28.1 (i.e., fixed in 1.26.3, 1.27.3, and 1.28.1 and later). Temporal Cloud services are not impacted.
Other sources
Insufficiently specific bounds checking on authorization header could lead to denial of service in the Temporal server on all platforms due to excessive memory allocation.This issue affects all platforms and versions of OSS Server prior to 1.26.3, 1.27.3, and 1.28.1 (i.e., fixed in 1.26.3, 1.27.3, and 1.28.1 and later). Temporal Cloud services are not impacted.
— MITRE
Affected Software
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2025-8396?
CVE-2025-8396 is classified as a denial of service vulnerability due to insufficient bounds checking on the authorization header.
How do I fix CVE-2025-8396?
To fix CVE-2025-8396, upgrade to Temporal OSS Server versions 1.26.3, 1.27.3, or 1.28.1.
What platforms are affected by CVE-2025-8396?
CVE-2025-8396 affects all platforms running Temporal OSS Server prior to versions 1.26.3, 1.27.3, and 1.28.1.
What could happen if CVE-2025-8396 is exploited?
Exploitation of CVE-2025-8396 could lead to excessive memory allocation, potentially causing denial of service for the Temporal server.
Is there a specific version of Temporal OSS Server that addresses CVE-2025-8396?
Yes, CVE-2025-8396 is addressed in Temporal OSS Server versions 1.26.3, 1.27.3, and 1.28.1.