CVE-2026-61511 — Vulnerability intelligence
vBulletin — vBulletin
Published:
- CVSS
- 9.3
- CISA KEV
- Not listed; not proof of no exploitation
Original source text (not a translation)
vBulletin 5.x through 5.7.5 and 6.x through 6.2.1 contains an eval injection vulnerability in the vB5_Template_Runtime::runMaths() method within the template runtime that allows unauthenticated remote attackers to execute arbitrary PHP code by supplying crafted input through the pagenav[pagenumber] parameter. Attackers can exploit the insufficiently restrictive regex filter by using phpfuck-style encoding with permitted characters to inject and execute arbitrary PHP code via the unauthenticated ajax/render template route without any authentication.