Is CVE-2026-54224 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-54224 being exploited in the wild.

How severe is CVE-2026-54224?

Informational severity, with a CVSS score of 7.1, published 18 June 2026.

Which products and versions are affected?

UBB Systems UBB.threads All versions through 7.7.5.

Is there a fix for CVE-2026-54224?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-54224 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-54224?

Check whether you run UBB Systems UBB.threads at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-54224: UBB Systems UBB.threads Denial of Service via resource exhaustion

CVE-2026-54224 · Severity: info · CVSS 7.1 · Published 2026-06-18

UBB.threads, a popular forum software, is vulnerable to a denial-of-service attack. An authenticated user can crash the forum or make it unresponsive for everyone else by repeatedly requesting to view user profiles. This exhausts the server's database resources, leading to a complete service outage and preventing legitimate users from accessing the community.

Technologies: UBB Systems UBB.threads. Vendors: UBB Systems.

Quick answers

Is CVE-2026-54224 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-54224 being exploited in the wild.
How severe is CVE-2026-54224?: Informational severity, with a CVSS score of 7.1, published 18 June 2026.
Which products and versions are affected?: UBB Systems UBB.threads All versions through 7.7.5.
Is there a fix for CVE-2026-54224?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-54224 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-54224?: Check whether you run UBB Systems UBB.threads at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

UBB.threads is vulnerable to asymmetric resource consumption (CWE-405) in the user profile viewing component. The root cause is inefficient database query handling when processing requests for user profiles on instances with large numbers of registered users. An authenticated attacker can exploit this by sending multiple concurrent requests to view profiles, leading to database resource exhaustion. This results in a complete Denial of Service (DoS) for the entire application. The vulnerability is confirmed in version 7.7.5, and as vendor contact attempts were unsuccessful, no official patch is currently available.

Affected products

UBB Systems UBB.threads All versions through 7.7.5

Timeline

2026-06-18: advisory: Advisory published by CERT.PL
2026-06-18: disclosed: Public disclosure via NVD

References

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