# CVE-2026-28497

## Summary

- **CVE ID:** CVE-2026-28497
- **Severity:** CRITICAL
- **CVSS Score:** 9.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-190, CWE-444
- **Published:** Mar 6, 2026
- **Last Modified:** Mar 12, 2026

## Description

TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. Prior to version 2.03, an integer overflow vulnerability in the string-to-integer conversion routine (_Val) allows an unauthenticated remote attacker to bypass Content-Length restrictions and perform HTTP Request Smuggling. This can lead to unauthorized access, security filter bypass, and potential cache poisoning. The impact is critical for servers using persistent connections (Keep-Alive). This issue has been patched in version 2.03.

## Affected Products

- maximmasiutin — TinyWeb (< 2.03)

## References

- [CNA](https://github.com/maximmasiutin/TinyWeb/security/advisories/GHSA-rp8j-cx7r-mw9f)
- [CNA](https://github.com/maximmasiutin/TinyWeb/commit/d2edd0322c3d74beee0a6c0191299b8946695d4e)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.47%
- **EPSS Percentile:** 38.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-09._