CVE-2025-47908: Denial of service via malicious preflight requests in github.com/rs/cors
github.com/rs/cors
Vendor fix available · Affected: github.com/rs/cors · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 52% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- github.com/rs/cors · github.com/rs/corsfrom 1.9.0 before 1.11.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Published
- August 2025
CoverageNo articles yet
No CyberSIXT article names CVE-2025-47908 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.