vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code]…
Priority CRITICAL 100Exploited in the wildCWE-94Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-94.
Summary
vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.
Why it matters now
Exploitation Active In CISA KEV since 2021-11-03CISA due date 2022-05-03
EPSS 0.99728 99th percentileScored 2026-11-07
Public exploit Yes 9 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
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-2019-16759
- 2026-10-03 Alias added: GHSA-c7wq-5768-48mp
References
Exploit 9
- https://seclists.org/fulldisclosure/2019/Sep/31
- https://arstechnica.com/information-technology/2019/09/public-exploit-code-spawns-mass-attacks-against-high-severity-vbulletin-bug/
- http://packetstormsecurity.com/files/154623/vBulletin-5.x-0-Day-Pre-Auth-Remote-Command-Execution.html
- http://packetstormsecurity.com/files/154648/vBulletin-5.x-Pre-Auth-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/155633/vBulletin-5.5.4-Remote-Command-Execution.html
- http://packetstormsecurity.com/files/158830/vBulletin-5.x-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/158829/vBulletin-5.x-Remote-Code-Execution.html
- 20200811 Remote Code Execution 0day in vBulletin 5.x
- http://packetstormsecurity.com/files/158866/vBulletin-5.x-Remote-Code-Execution.html
More Vbulletin vulnerabilities
- TI-2020-13248 vBulletin 5.5.4 through 5.6.2 allows remote command execution via crafted subWidgets data… 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
Sources
- CVE-2019-16759 · CVE Program
- CVE-2019-16759 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-c7wq-5768-48mp · GitHub Advisory Database · CC BY 4.0
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