Web-Check allows command Injection via Unvalidated URL in Screenshot API

published 2025-04-15 18 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-11013

cvss: 9.3; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 19.9%; EPSS 19.9% chance of exploitation in 30 days, percentile 97%
public exploits: 1; Metasploit, plus a Nuclei check

Web-Check is an all-in-one OSINT tool for analyzing any website. A command injection vulnerability exists in the screenshot API of the Web Check project (Lissy93/web-check). The issue stems from user-controlled input (url) being passed unsanitized into a shell command using exec(), allowing attackers to execute arbitrary system commands on the underlying host. This could be exploited by sending crafted url parameters to extract files or even establish remote access. The vulnerability has been patched by replacing exec() with execFile(), which avoids using a shell and properly isolates arguments.

Patch / fix

links 2

github.com/Lissy93/web-check@0e4958a commit
github.com/Lissy93/web-check#243 pull request

Timeline

2025-04-12 First public exploit (Metasploit exploit/multi/http/web_check_screenshot_rce)
2025-04-15 Published

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 18 mo ago (2025-04-15)

Exploit prediction

19.91% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Metasploit exploit/multi/http/web_check_screenshot_rce Web-Check Screenshot API Command Injection RCE metasploit exploit, excellent rank, 2025-04-12
Nuclei template Web-Check < 2.0.1 Screenshot API - OS Command Injection nuclei detection template

CVSS scores

assigned by	version	score	vector
CNA	4.0	9.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA	4.0	9.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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

Affected products

Lissy93 web-check

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

CVE List CVE-2025-32778
NVD CVE-2025-32778

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary