November 3, 2021 · Applied Cybernetics Group
CVE-2020-17496 — vBulletin vBulletin
vBulletin PHP Module Remote Code Execution Vulnerability
- Added to KEV
2021-11-03- Federal due date
2022-05-03- Vendor
- vBulletin
- Product
- vBulletin
- EPSS
- 99.9th percentile (score 0.942, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2020-17496
CISA short description
The PHP module within vBulletin contains an unspecified vulnerability that allows for remote code execution via crafted subWidgets data in an ajax/render/widget_tabbedcontainer_tab_panel request. This CVE ID resolves an incomplete patch for CVE-2019-16759.
Required action
Apply updates per vendor instructions.