TI-2020-13248 Aliases CVE-2020-17496 GHSA-j77p-6wx9-cjqq

vBulletin 5.5.4 through 5.6.2 allows remote command execution via crafted subWidgets data…

CRITICAL 100Exploited in the wildCWE-74Published 2020-08-12 · Updated 2025-10-21

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Active In CISA KEV since 2021-11-03CISA due date 2022-05-03

EPSS 0.87478 99th percentileScored 2026-11-07

Public exploit Yes 2 exploit referencesTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Active
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:vbulletin:vbulletin::::::::	5.5.4 – 5.6.2	Vulnerable	vBulletin

cpe:2.3:a:vbulletin:vbulletin:*:*:*:*:*:*:*:* Versions 5.5.4 – 5.6.2 Vulnerable ·vBulletin

Remediation

No fixed version listed by the sources yet.

Timeline

2021-11-03 Added to CISA KEV
2026-10-02 Threatist record created from CVE-2020-17496
2026-10-03 Alias added: GHSA-j77p-6wx9-cjqq

References

Exploit 2

Patch 1

https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4445227-vbulletin-5-6-0-5-6-1-5-6-2-security-patch

Other 1

https://cwe.mitre.org/data/definitions/78.html

TI-2019-12540 vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code]… KEVCVSS 3.1CRITICAL 9.8
TI-2025-31014 vBulletin 5.0.0 through 5.7.5 and 6.0.0 through 6.0.3 allows unauthenticated users to… CVSS 3.1CRITICAL 10.0
TI-2020-10114 vBulletin before 5.5.6pl1, 5.6.0 before 5.6.0pl1, and 5.6.1 before 5.6.1pl1 has incorrect access control. CVSS 3.1CRITICAL 9.8
TI-2023-10600 vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary… CVSS 3.1CRITICAL 9.8
TI-2016-05317 SQL injection vulnerability in forumrunner/includes/moderation.php in vBulletin before… CVSS 3.0CRITICAL 9.8
TI-2025-31015 Certain vBulletin versions might allow attackers to execute arbitrary PHP code by abusing… CVSS 3.1CRITICAL 9.0

See all 49 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences