7.1
HIGH
CVE-2021-32735
Kirby CMS Cross-Site Scripting (XSS)
Description

Kirby is a content management system. In Kirby CMS versions 3.5.5 and 3.5.6, the Panel's `ListItem` component (used in the pages and files section for example) displayed HTML in page titles as it is. This could be used for cross-site scripting (XSS) attacks. Malicious authenticated Panel users can escalate their privileges if they get access to the Panel session of an admin user. Visitors without Panel access can use the attack vector if the site allows changing site data from a frontend form. Kirby 3.5.7 patches the vulnerability. As a partial workaround, site administrators can protect against attacks from visitors without Panel access by validating or sanitizing provided data from the frontend form.

INFO

Published Date :

July 2, 2021, 3:15 p.m.

Last Modified :

July 6, 2021, 6:21 p.m.

Remotely Exploitable :

Yes !

Impact Score :

4.2

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-32735 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 Getkirby kirby
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-2021-32735.

URL Resource
https://github.com/getkirby/kirby/releases/tag/3.5.7 Patch Release Notes Third Party Advisory
https://github.com/getkirby/kirby/security/advisories/GHSA-2f2w-349x-vrqm Patch Release Notes 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).

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

The following list is the news that have been mention CVE-2021-32735 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-32735 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 [email protected]

    May. 14, 2024

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

    Jul. 06, 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:S/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    Changed Reference Type https://github.com/getkirby/kirby/releases/tag/3.5.7 No Types Assigned https://github.com/getkirby/kirby/releases/tag/3.5.7 Patch, Release Notes, Third Party Advisory
    Changed Reference Type https://github.com/getkirby/kirby/security/advisories/GHSA-2f2w-349x-vrqm No Types Assigned https://github.com/getkirby/kirby/security/advisories/GHSA-2f2w-349x-vrqm Patch, Release Notes, Third Party Advisory
    Added CWE NIST CWE-79
    Added CPE Configuration OR *cpe:2.3:a:getkirby:kirby:*:*:*:*:*:*:*:* versions up to (excluding) 3.5.7
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-2021-32735 is associated with the following CWEs:

Exploit Prediction

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

0.05 }} 0.00%

score

0.17086

percentile

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