CVE-2024-52702: mybb XSS — Exploit & Fix

Description

A stored cross-site scripting (XSS) vulnerability in the component install\index.php of MyBB v1.8.38 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Website Name parameter. NOTE: this is disputed by the Supplier because Website Name can only be set by an administrator, who may use JavaScript if they wish.

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
mybb	mybb	All

References

Advisories & Patches

https://github.com/mybb/mybb/issues/4859

Exploits

https://github.com/mybb/mybb/issues/4859

Other References

https://github.com/mybb/mybb/issues/4859#issuecomment-2468480756

Frequently Asked Questions

What is CVE-2024-52702? +

A stored cross-site scripting (XSS) vulnerability in the component install\index.php of MyBB v1.8.38 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Website Name parameter. NOTE: this is disputed by the Supplier because Website Name can only be set by an administrator, who may use JavaScript if they wish. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2024-52702? +

CVE-2024-52702 has a CVSS v3.1 score of 5.4 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-2024-52702? +

CVE-2024-52702 affects products from mybb, specifically: mybb. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-52702? +

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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