CVE-2025-47908
Middleware causes a prohibitive amount of heap allocations when processing malicious preflight requests that include a Access-Control-Request-Headers (ACRH) header whose value contains many commas. This behavior can be abused by attackers to produce undue load on the middleware/server as an attempt to cause a denial of service.
Published:Aug 6, 2025
Last Modified:Apr 15, 2026
EPS:Aug 6, 2025
EPSS Score:0.00115
CVSS Score:7.5
Affected Products
Vendor
Product
Action
Vendor
Golang
Product
Cors
Golang
Cors
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
