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Security Advisories

CVE-2025-47908

NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-47908

Severity

7.5

High

CVSS V3

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Summary

Denial of service via malicious preflight requests in github.com/rs/cors

Description

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

Affected packages


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