UpHeron
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Servers and applications

CVE-2020-17496

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.

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021.

Severity
Critical 9.8
Published
12 Aug 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
vBulletinServers and applications · cpe:a:vbulletin:vbulletin
  • From 5.5.4 up to 5.6.2

Known exploited

CISA name
vBulletin PHP Module Remote Code Execution Vulnerability
Required action
Apply updates per vendor instructions.
Due for US agencies
3 May 2022
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-17496
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-17496