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CVE-2026-73320

6.1 · MEDIUM

XenForo before 2.3.13 contains an unauthenticated information disclosure vulnerability that allows unauthenticated attackers to retrieve private unfurl records by supplying predictable auto-increme…

Published Sep 8, 2026xenforoCWE-639EPSS 0.36%

Overview

CVE-2026-73320 is a medium-severity vulnerability affecting xenforo xenforo. It was published on September 8, 2026 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

XenForo before 2.3.13 contains an unauthenticated information disclosure vulnerability that allows unauthenticated attackers to retrieve private unfurl records by supplying predictable auto-increment primary key IDs to the unfurl endpoint. Attackers can enumerate or predict result IDs and query the endpoint without any session, user, or visibility checks to obtain rendered preview HTML, original URLs, and query strings from private conversations and other restricted content.

Remediation

Check the references section for vendor advisories and patches from xenforo. Update xenforo to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
xenforoxenforo>= 0, < 2.3.13Affected

References

Refbombobombone.github.io/posts/cve-2026-73320/GitHubgithub.com/BomboBombone/CVE-2026-73320Refwww.vulncheck.com/advisories/xenforo-unauthenticated-information-disclosure-via-unfurl-endpointRefxenforo.com/community/threads/security-fixes-released-for-all-xenforo-and-media-gallery-versions-2-2-0-2-3-12.239856/Refxenforo.com/community/threads/xenforo-2-3-13-and-add-ons-released-includes-security-fixes.239857/

How CyberStrike helps

Frequently asked questions

What is CVE-2026-73320?

CVE-2026-73320 is a medium-severity vulnerability affecting xenforo xenforo. It was published on September 8, 2026 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2026-73320?

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-73320?

Check the references section for vendor advisories and patches from xenforo. Update xenforo to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-73320?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-73320 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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