Vulnerability Details CVE-2026-28497
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 16.9%
CVSS Severity
CVSS v3 Score 9.1
References
Products affected by CVE-2026-28497
-
cpe:2.3:a:ritlabs:tinyweb:0.5
-
cpe:2.3:a:ritlabs:tinyweb:0.6
-
cpe:2.3:a:ritlabs:tinyweb:0.7
-
cpe:2.3:a:ritlabs:tinyweb:0.9
-
cpe:2.3:a:ritlabs:tinyweb:1.0
-
cpe:2.3:a:ritlabs:tinyweb:1.3
-
cpe:2.3:a:ritlabs:tinyweb:1.4
-
cpe:2.3:a:ritlabs:tinyweb:1.5
-
cpe:2.3:a:ritlabs:tinyweb:1.6
-
cpe:2.3:a:ritlabs:tinyweb:1.8
-
cpe:2.3:a:ritlabs:tinyweb:1.9
-
cpe:2.3:a:ritlabs:tinyweb:1.94
-
cpe:2.3:a:ritlabs:tinyweb:1.95
-
cpe:2.3:a:ritlabs:tinyweb:1.96
-
cpe:2.3:a:ritlabs:tinyweb:1.97
-
cpe:2.3:a:ritlabs:tinyweb:1.98
-
cpe:2.3:a:ritlabs:tinyweb:1.99