CISA KEV catalog
Confirmed active exploitation.
Listed in CISA's catalog of Known Exploited Vulnerabilities: attackers are using it in real attacks. Patch it with priority.
- Name
- vBulletin PHP Module Remote Code Execution Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
vBulletin 5.5.4 through 5.6.2 allows remote command execution via crafted subWidgets data in an ajax/render/widget_tabbedcontainer_tab_panel request. NOTE: this issue exists because of an incomplete fix for CVE-2019-16759.
Affected products
vbulletin: vbulletin
References9
- forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-ann… PatchVendor Advisory
- forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-ann… PatchVendor Advisory
- blog.exploitee.rs/2020/exploiting-vbulletin-a-tale-of-patch-fai… ExploitThird Party Advisory
- seclists.org/fulldisclosure/2020/Aug/5 ExploitMailing ListThird Party Advisory
- blog.exploitee.rs/2020/exploiting-vbulletin-a-tale-of-patch-fai… ExploitThird Party Advisory
- seclists.org/fulldisclosure/2020/Aug/5 ExploitMailing ListThird Party Advisory
- cwe.mitre.org/data/definitions/78.html Technical Description
- cwe.mitre.org/data/definitions/78.html Technical Description
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=… US Government Resource
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 87% percentile: 100 · as of 2 November 2026
- CWE
- CWE-74