CVE-2025-66373

MEDIUM EPSS 14.2%
Published Dec 4, 20256mo ago · Modified Jun 17, 20262w ago
4.8 CVSS 3.1
Medium
Find Similar
Published Dec 4, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago

Description

Akamai Ghost on Akamai CDN edge servers before 2025-11-17 has a chunked request body processing error that can result in HTTP request smuggling. When Akamai Ghost receives an invalid chunked body that includes a chunk size different from the actual size of the following chunk data, under certain circumstances, Akamai Ghost erroneously forwards the invalid request and subsequent superfluous bytes to the origin server. An attacker could hide a smuggled request in these superfluous bytes. Whether this is exploitable depends on the origin server's behavior and how it processes the invalid request it receives from Akamai Ghost.

CVSS Details

Base Score
4.8
Exploitability
2.2
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
14.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-444

Affected Products 1

VendorProductVersionRange
akamaiakamaighost* <2025-11-17

References 2

  • en.wikipedia.org https://en.wikipedia.org/wiki/HTTP_request_smuggling
    Technical Description
  • akamai.com https://www.akamai.com/blog/security/cve-2025-66373-http-request-smuggling-chunked-body-size
    MitigationVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.