CVE-2025-8396
September 15, 2025
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.
Affected Packages
go.temporal.io/server (GO):
Affected version(s) >=v1.27.0-126.0 <v1.27.3Fix Suggestion:
Update to version v1.27.3go.temporal.io/server (GO):
Affected version(s) >=v1.28.0-129.0 <v1.28.1Fix Suggestion:
Update to version v1.28.1go.temporal.io/server (GO):
Affected version(s) >=v0.0.0-20210716060757-b36dbeb50ae7 <v1.26.3Fix Suggestion:
Update to version v1.26.3Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
LOW
CVSS v3
Base Score:
5.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Allocation of Resources Without Limits or Throttling
EPSS
Base Score:
0.10
