CVE-2020-17496
vBulletin PHP Module Remote Code Execution Vulnerability
What the flaw is
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.
Description as published by CISA. We have not independently reproduced it.
What CISA requires
Apply updates per vendor instructions.
This deadline is binding on US federal civilian agencies under BOD 22-01. It is not a legal deadline for anyone else, but it is a useful urgency signal — CISA sets it by how actively the flaw is being used, not by CVSS.
Public exploit code
18 public repositories referencing this CVE have been catalogued on GitHub. Treat this as a strong signal to prioritise patching, not as a verified working exploit — many such repositories are scanners, write-ups or forks rather than functional code.
- 0xT11/CVE-POC
- ARPSyndicate/cvemon
- ARPSyndicate/kenzer-templates
- Elsfa7-110/kenzer-templates
- HimmelAward/Goby_POC
- Live-Hack-CVE/CVE-2020-17496
- NyxAzrael/Goby_POC
- Ostorlab/KEV
Showing 8 of 18. Full list in the trickest/cve dataset.
Vendor advisories
Primary sources
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Other vBulletin entries
See allSource: CISA KEV catalog · last verified August 6, 2026. Rebuilt automatically twice a day.