CVE-2024-26484: kirby XSS — Exploit & Fix

Description

A stored cross-site scripting (XSS) vulnerability in the Edit Content Layout module of Kirby CMS v4.1.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Link field. NOTE: the vendor's position is that this issue did not affect any version of Kirby CMS. The only effect was on the trykirby.com demo site, which is not customer-controlled.

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CVSS v3.1 Score

6.1

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
getkirby	kirby	All

References

Advisories & Patches

https://github.com/getkirby/demokit/commit/d4877a6715cbf6517cb04ff57798851ffbd0cd7e https://github.com/getkirby/demokit/commit/d4877a6715cbf6517cb04ff57798851ffbd0cd7e

Exploits

https://shrouded-trowel-50c.notion.site/Kirby-CMS-4-1-0-Stored-Cross-Site-Scripting-153b4eb557a2488188ad8167734ca226?pvs=4 https://shrouded-trowel-50c.notion.site/Kirby-CMS-4-1-0-Stored-Cross-Site-Scripting-153b4eb557a2488188ad8167734ca226?pvs=4

Frequently Asked Questions

What is CVE-2024-26484? +

A stored cross-site scripting (XSS) vulnerability in the Edit Content Layout module of Kirby CMS v4.1.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Link field. NOTE: the vendor's position is that this issue did not affect any version of Kirby CMS. The only effect was on the trykirby.com demo site, which is not customer-controlled. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2024-26484? +

CVE-2024-26484 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-26484? +

CVE-2024-26484 affects products from getkirby, specifically: kirby. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-26484? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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