CVE-2021-27519

MEDIUM NUCLEI

FUDForum 3.1.0 - Cross-Site Scripting via Index.php Srch Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-27519. PoCs published by Piyush Patil. A Nuclei detection template is also available.

AI-analyzed exploit summary This is a writeup describing a reflected XSS vulnerability in FUDForum 3.1.0 via the 'srch' parameter. It includes a payload and steps to reproduce but lacks executable exploit code.

Description

A cross-site scripting (XSS) issue in FUDForum 3.1.0 allows remote attackers to inject JavaScript via index.php in the "srch" parameter.

Exploits (1)

exploitdb WRITEUP
by Piyush Patil · textwebappsphp
https://www.exploit-db.com/exploits/49942

This is a writeup describing a reflected XSS vulnerability in FUDForum 3.1.0 via the 'srch' parameter. It includes a payload and steps to reproduce but lacks executable exploit code.

Classification
Writeup 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: FUDForum 3.1.0
No auth needed
Prerequisites: Access to the target FUDForum instance
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

FUDForum 3.1.0 - Cross-Site Scripting
MEDIUMVERIFIEDby kh4sh3i
Shodan: http.html:"Powered by: FUDforum" || http.html:"fudforum" || http.html:"powered by: fudforum"
FOFA: body="powered by: fudforum" || body="fudforum"

References (2)

Core 2
Core References
Exploit, Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://github.com/fudforum/FUDforum/issues/2
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
http://packetstormsecurity.com/files/162942/FUDForum-3.1.0-Cross-Site-Scripting.html

Scores

CVSS v3 6.1
EPSS 0.0760
EPSS Percentile 93.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
fudforum/fudforum 3.1.0
Published Mar 19, 2021
Tracked Since Feb 18, 2026