CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2025-47908
High (7.5). EPSS 0.6% chance of exploitation in the next 30 days. Fixed in github.com/rs/cors 1.11.0.
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.
Severity
- EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-mh55-gqvf-xfwm | Go | github.com/rs/cors | >=1.9.0 <1.11.0 | 1.11.0 |
| GO-2024-2883 | Go | github.com/rs/cors | >=1.9.0 <1.11.0 | 1.11.0 |