CVE-2026-5440
High · 7.5CVSS
7.5
EPSS
0.9%
Published
Apr 9, 2026
CISA due date
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The record
A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the `Content-Length` header. The server allocates memory directly based on the attacker supplied header value without enforcing an upper limit. A crafted HTTP request containing an extremely large `Content-Length` value can trigger excessive memory allocation and server termination, even without sending a request body.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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