CVE-2025-61729
December 02, 2025
Within HostnameError.Error(), when constructing an error string, there is no limit to the number of hosts that will be printed out. Furthermore, the error string is constructed by repeated string concatenation, leading to quadratic runtime. Therefore, a certificate provided by a malicious actor can result in excessive resource consumption.
Affected Packages
https://github.com/golang/go.git (GITHUB):
Affected version(s) >=go1.25.0 <go1.25.5Fix Suggestion:
Update to version go1.25.5https://github.com/golang/go.git (GITHUB):
Affected version(s) >=go1 <go1.24.11Fix Suggestion:
Update to version go1.24.11github.com/golang/go (GO):
Affected version(s) >=go1 <go1.24.11Fix Suggestion:
Update to version go1.24.11github.com/golang/go (GO):
Affected version(s) >=go1.25.0 <go1.25.5Fix Suggestion:
Update to version go1.25.5Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
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
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Improper Certificate Validation
EPSS
Base Score:
0.02
