Wire · regulatory
Public Exploit Released for Patched vBulletin Pre-Auth Code Execution Flaw
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Fusion42 · 28 July 2026 · Fusion42 review
A public exploit for CVE-2026-61511, an unauthenticated remote code execution flaw in vBulletin's template engine, was released on 27 July 2026, nearly four weeks after vBulletin issued patches in late June. The vulnerability affects vBulletin 6.2.1 and earlier versions; no active exploitation has been confirmed as of the disclosure date.
This Wire brief sits within Fusion42's coverage of Cybersecurity and Enterprise Software.
◆ ◆ The Wire takeaway
Forum software has a known remote code execution hole that was patchable four weeks ago but attackers now have working code for. If you operate a vBulletin community platform, your server logs from late June to now are your only record of whether this breach happened—check them before someone else does.
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1 source · 28 Jul 2026
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