All vulnerabilities

Servers and applications

CVE-2021-37840

aaPanel through 6.8.12 allows Cross-Site WebSocket Hijacking (CSWH) involving OS commands within WebSocket messages at a ws:// URL for /webssh (the victim must have configured Terminal with at least one host). Successful exploitation depends on the browser used by a potential victim (e.g., exploitation can occur with Firefox but not Chrome).

Severity
High 8.8
Published
2 Aug 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
aaPanelServers and applications · cpe:a:aapanel:aapanel
  • Every version up to 6.8.12

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-37840
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-37840