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Vulnerability record · CVE-2021-27519 · published 19 March 2021

CVE-2021-27519: Fudforum cross-site scripting vulnerability

Fudforum · Fudforum

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

6.1 CVSS 3.1 Medium EPSS 7.6% · top 5.7% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
7.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 4 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/162942/FUDForum-3.1.0-Cross-Site-Scripting.html ExploitThird Party AdvisoryVDB Entry
https://github.com/fudforum/FUDforum/issues/2 ExploitIssue TrackingPatchThird Party Advisory
http://packetstormsecurity.com/files/162942/FUDForum-3.1.0-Cross-Site-Scripting.html ExploitThird Party AdvisoryVDB Entry
https://github.com/fudforum/FUDforum/issues/2 ExploitIssue TrackingPatchThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.0CVE-2019-18839Fudforum os command injection vulnerabilityFUDForum 3.0.9 is vulnerable to Stored XSS via the nlogin parameter. This may result in remote code execution. An attacker can use a user account to …EPSS 5.4%9.0CVE-2019-18873Fudforum os command injection vulnerabilityFUDForum 3.0.9 is vulnerable to Stored XSS via the User-Agent HTTP header. This may result in remote code execution. An attacker can use a user accou…EPSS 8.2%7.2CVE-2022-30860Fudforum unrestricted file upload vulnerabilityFUDforum 3.1.2 is vulnerable to Remote Code Execution through Upload File feature of File Administration System in Admin Control Panel.EPSS 25%7.2CVE-2013-2267Fudforum code injection vulnerabilityPHP Code Injection vulnerability in FUDforum Bulletin Board Software 3.0.4 could allow remote attackers to execute arbitrary code on the system.EPSS 8.8%6.1CVE-2024-30951Fudforum cross-site scripting vulnerabilityFUDforum v3.1.3 was discovered to contain a reflected cross-site scripting (XSS) vulnerability via the chpos parameter at /adm/admsmiley.php.EPSS 0.37%6.1CVE-2021-27520Fudforum cross-site scripting vulnerabilityA cross-site scripting (XSS) issue in FUDForum 3.1.0 allows remote attackers to inject JavaScript via index.php in the "author" parameter.EPSS 6.4%5.4CVE-2022-28545Fudforum cross-site scripting vulnerabilityFUDforum 3.1.1 is vulnerable to Stored XSS.EPSS 0.48%4.8CVE-2022-30861Fudforum cross-site scripting vulnerabilityFUDforum 3.1.2 is vulnerable to Stored XSS via Forum Name field in Forum Manager Feature.EPSS 0.56%

Source: NIST National Vulnerability Database (record CVE-2021-27519), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.