Hiawatha Webserver is a lightweight HTTP server project with a narrow and specialized product scope, developed as an alternative to widely deployed general-purpose web platforms. The vulnerability profile reflects the focused nature of the product and its relatively contained footprint; live severity, exploitation, and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Hiawatha Webserver over time
Signals from CVEs in this vendor scope (3 CVEs).
3 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2019-8358HIGH In Hiawatha before 10.8.4, a remote attacker is able to do directory traversal if AllowDotFiles is enabled. | Feb 16, 2019 | 8.1 | 24 | NO | NO |
CVE-2025-57783MEDIUM Improper header parsing may lead to request smuggling has been identified in Hiawatha webserver version 11.7 which allows an unauthenticated attacker to access restricted resources | Jan 26, 2026 | 5.3 | 19 | NO | NO |
Tomahawk auth timing attack due to usage of `strcmp` has been identified in Hiawatha webserver version 11.7 which allows a local attacker to access the management client. | Jan 26, 2026 | 3.3 | 16 | NO | NO |
Signals from CVEs in this vendor scope (3 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Hiawatha Webserver.
Media articles that mention a CVE ID that affects a product developed by Hiawatha Webserver — matched by CVE ID, not by vendor name.