CVE-2026-28497

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Source

https://cve.org/CVERecord?id=CVE-2026-28497

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28497.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-28497

Aliases

GHSA-rp8j-cx7r-mw9f

Published

2026-03-06T02:51:59.046Z

Modified

2026-04-10T05:41:16.497846Z

Severity

9.3 (Critical) CVSS_V4 - 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 CVSS Calculator

Summary

TinyWeb: Integer Overflow in `_Val` (HTTP Request Smuggling)

Details

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.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-190",
        "CWE-444"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28497.json"
}

References

Affected packages

Git / github.com/maximmasiutin/tinyweb

Affected ranges

Type: GIT
Repo: https://github.com/maximmasiutin/tinyweb
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

d2edd0322c3d74beee0a6c0191299b8946695d4e

Affected versions

1.*

1.98

v1.*

v1.95

v1.96

v1.97

v1.98

v1.99

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28497.json"