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3034 articles · 107139 vulns · 38/41 feeds (7d)
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6.1
CVE-2026-35055EXPLOITEDPATCHED
xenforo · xenforo

XenForo Cross-Site Scripting via Lightbox in Posts

Description

XenForo before 2.3.9 and before 2.2.18 is vulnerable to cross-site scripting (XSS) related to lightbox usage in posts. An attacker can inject malicious scripts that execute when users interact with post content displayed in the lightbox.

Affected Products

VendorProductVersions
xenforoxenforo2.3.0, 0

References

  • https://xenforo.com/community/threads/xenforo-2-3-9-inc-xfmg-2-2-18-released-security-fix.235659/(vendor-advisory, patch)
  • https://www.vulncheck.com/advisories/xenforo-cross-site-scripting-via-lightbox-in-posts(third-party-advisory)

Related News (1 articles)

Tier C
VulDB15h ago
CVE-2026-35055 | XenForo up to 2.2.17/2.3.8 cross site scripting
→ No new info (linked only)
CVSS 3.16.1 NONE
CISA KEV❌ No
Actively exploited✅ Yes
Patch available
2.3.92.2.18
CWECWE-79
PublishedApr 1, 2026
Last enriched15h agov2
Trending Score37
Source articles1
Independent1
Info Completeness9/14
Missing: epss, kev, exploit, iocs, mitre_attack

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Related CVEs (5)

NONECVE-2026-35056EXPKEV
XenForo Remote Code Execution via Authenticated Admin
Trending: 83
NONECVE-2025-71282EXP
XenForo Path Disclosure via open_basedir Exceptions
Trending: 46
NONECVE-2026-35057EXP
XenForo Stored Cross-Site Scripting via Structured Text Mentions
Trending: 44
NONECVE-2024-58342EXP
XenForo Open Redirect via getDynamicRedirect
Trending: 37
NONECVE-2025-71281EXP
XenForo Template Method Call Restriction Bypass
Trending: 37

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
Apr 1, 2026
Discovered by ZDM
Apr 1, 2026
Updated: affectedVersions, severity, activelyExploited
Apr 1, 2026
Actively Exploited
Apr 1, 2026
Patch Available
Apr 1, 2026

Version History

v2
Last enriched 15h ago
v2Tier C15h ago

Updated affected versions to 2.2.17 and 2.3.8, changed severity to HIGH, and noted that no exploit is available.

affectedVersionsseverityactivelyExploited
via VulDB
v116h ago

Initial creation