CVE-2025-47908

Aliases:GHSA-mh55-gqvf-xfwmGO-2024-2883
Advisory lineage Upstream: 0 Downstream: 6
Deferred
Published: 06 Aug 2025, 20:41
Last modified:07 Aug 2025, 13:47

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
0.38% LOW
0% probability +0.27%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

06 Aug 2025, 20:41
Published
Vulnerability first disclosed
07 Aug 2025, 13:47
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.38%• Percentile: 60%

Affected Systems

  • github.com/rs/cors•github.com/rs/cors

    ≥ 1.9.0, < 1.11.0

  • github.com/rs•cors

    ≥ 1.9.0, < 1.11.0

References (6)