GHSA-mh55-gqvf-xfwm
Denial of service via malicious preflight requests in github.com/rs/cors
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/rs/cors | >= 1.9.0, < 1.11.0 | 1.11.0 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.