CVE-2026-73320
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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.1
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- EPSS probability
- 0.25%
- CWE
- CWE-639
- Published
- 2026-09-08
- Last modified
- 2026-09-09
Affected products
- XenForo XenForo
Weakness type
Related vulnerabilities
- CVE-2026-68527 — Concrete CMS 8.3.0 through 9.5.2 is vulnerable to an authorization bypass through user-controlled key (cross-calendar IDOR) in the Calendar event edit dialog
- CVE-2026-88877 — Traefik v3.7.0 Authentication Bypass via from-to-www-redirect
- CVE-2026-88865 — AVideo Missing Authorization via getRestream.json.php
- CVE-2026-80354 — Apache Camel K: Camel K Builder trait mavenProfiles ValueSources resolve tenant-named secrets in operator namespace
- CVE-2026-82582 — An authorization bypass vulnerability exists in SHIRASAGI through a user-controlled key, which may...
- CVE-2026-84062 — BurgerEditor 3.0.0 through 3.4.0 contains an issue with authorization bypass through...
- CVE-2026-87997 — Open WebUI: Any authenticated user can inject chats into another user's folder via chat completions
- CVE-2026-87994 — Open WebUI: Channel members can overwrite another member's message via the chat completions endpoint