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CVE-2026-27633
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-02-26T00:16:24.130 · Last modified 2026-06-17T10:27:25.627

Summary

TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. Versions prior to version 2.02 have a Denial of Service (DoS) vulnerability via memory exhaustion. Unauthenticated remote attackers can send an HTTP POST request to the server with an exceptionally large `Content-Length` header (e.g., `2147483647`). The server continuously allocates memory for the request body (`EntityBody`) while streaming the payload without enforcing any maximum limit, leading to all available memory being consumed and causing the server to crash. Anyone hosting services using TinyWeb is impacted. Version 2.02 fixes the issue. The patch introduces a `CMaxEntityBodySize` limit (set to 10MB) for the maximum size of accepted payloads. As a temporary workaround if upgrading is not immediately possible, consi

Affected products

ritlabs — tinyweb

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.