6.1
MEDIUM
CVE-2021-27520
FUDForum Cross-Site Scripting Vulnerability
Description

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

INFO

Published Date :

March 19, 2021, 7:15 p.m.

Last Modified :

Nov. 21, 2024, 5:58 a.m.

Remotely Exploitable :

Yes !

Impact Score :

2.7

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2021-27520 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-27520 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Fudforum fudforum
1 Ilia_alshanetsky fudforum
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-27520.

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

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

essential templates for kenzer [DEPRECATED]

kenzer vulnerabilities kenzer-templates arpsyndicate

Python Shell Ruby

Updated: 2 weeks, 1 day ago
109 stars 34 fork 34 watcher
Born at : Sept. 18, 2020, 9:03 p.m. This repo has been linked 1654 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-27520 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-27520 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/162942/FUDForum-3.1.0-Cross-Site-Scripting.html
    Added Reference https://github.com/fudforum/FUDforum/issues/2
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Dec. 03, 2021

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/162942/FUDForum-3.1.0-Cross-Site-Scripting.html No Types Assigned http://packetstormsecurity.com/files/162942/FUDForum-3.1.0-Cross-Site-Scripting.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type https://github.com/fudforum/FUDforum/issues/2 Exploit, Issue Tracking, Third Party Advisory https://github.com/fudforum/FUDforum/issues/2 Exploit, Issue Tracking, Patch, Third Party Advisory
  • CVE Modified by [email protected]

    Jun. 03, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/162942/FUDForum-3.1.0-Cross-Site-Scripting.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 23, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    Changed Reference Type https://github.com/fudforum/FUDforum/issues/2 No Types Assigned https://github.com/fudforum/FUDforum/issues/2 Exploit, Issue Tracking, Third Party Advisory
    Added CWE NIST CWE-79
    Added CPE Configuration OR *cpe:2.3:a:fudforum:fudforum:3.1.0:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-27520 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-27520 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.31 }} 0.09%

score

0.69064

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability