Tag: Header Size

Problems related to the size of headers

ID	Title	Description	Category	Technology	Tags
CRE-2025-0055 Medium Impact: 8/10 Mitigation: 3/10	Nginx upstream buffer size too small	Nginx reports that an upstream server is sending headers that exceed the configured buffer size limits. This typically happens when the upstream application sends responses with large headers, cookies, or other header fields that don't fit in the default buffer allocation. When this occurs, Nginx cannot properly proxy the response to clients, resulting in HTTP errors.	Web Server Problems	nginx	Nginx Configuration Proxy Header Size Buffer