What’s Vulnerable › Vulnerabilities

CVE-2024-47866: RGW DoS attack with empty HTTP header in S3 object copy

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-11-12 · updated 2026-06-17
• Weakness: CWE-20

Description

Ceph is a distributed object, block, and file storage platform. In versions up to and including 19.2.3, using the argument `x-amz-copy-source` to put an object and specifying an empty string as its content leads to the RGW daemon crashing, resulting in a DoS attack. As of time of publication, no known patched versions exist.

Affected products

• ceph: through 19.2.3

References

• https://github.com/ceph/ceph/security/advisories/GHSA-mgrm-g92q-f8h8
• http://www.openwall.com/lists/oss-security/2025/11/11/3
• https://github.com/ceph/ceph/security/advisories/GHSA-mgrm-g92q-f8h8

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