CVE-2025-66373 Other in n/a
Attackers can smuggle HTTP requests via Akamai Ghost edge servers by exploiting chunked body processing errors, potentially bypassing security controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-66373?
CVE-2025-66373 is a medium-severity vulnerability in n/a, published on 4 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-444
Which versions are affected by CVE-2025-66373?
It affects 1 product.
Products include Akamai Akamaighost.
How do I fix CVE-2025-66373?
No fix has been published for CVE-2025-66373 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-66373 being exploited?
There is no known exploitation of CVE-2025-66373 in the wild and no public exploit code.
Sources
Also known as GHSA-xxgg-h2vh-mc43.