CVE-2026-22781 describes an OS command injection vulnerability in TinyWeb HTTP Server versions prior to 1.98. An unauthenticated remote attacker can exploit this flaw by injecting Windows shell metacharacters into CGI ISINDEX-style query parameters, which are then passed as command-line arguments to CGI executables. This critical vulnerability, with a CVSS score of 9.8, allows for arbitrary command execution on the affected server. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, indicating awareness among security researchers.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.98CPE matchmatch criteria | cpe:2.3:a:ritlabs:tinyweb:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.