CVE-2026-73320XenForo < 2.3.13 Unauthenticated Information Disclosure via Unfurl Endpoint
Updated under an hour ago ()
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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.
- CVSS
- 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-639
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Analyzed
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
XenForo XenForo xenforo:xenforo (from the name) | before 2.3.13 | CNA record |
xenforo xenforo xenforo:xenforo | before 2.3.13 | NVD |
References
- https://xenforo.com/community/threads/security-fixes-released-for-all-xenforo-and-media-gallery-versions-2-2-0-2-3-12.239856/vendor-advisory, patch, release-notes
- https://xenforo.com/community/threads/xenforo-2-3-13-and-add-ons-released-includes-security-fixes.239857/release-notes
- https://bombobombone.github.io/posts/cve-2026-73320/technical-description, exploit, third-party-advisory
- https://github.com/BomboBombone/CVE-2026-73320exploit, third-party-advisory
- https://www.vulncheck.com/advisories/xenforo-unauthenticated-information-disclosure-via-unfurl-endpointthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.