CVE-2021-37840

HIGH
Published Aug 2, 20214y ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Aug 2, 2021 4y ago
Last Modified Jun 17, 2026 2w ago

Description

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).

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
No Patch Available

Affected Products 1

VendorProductVersionRange
aapanelaapanel* ≤6.8.12

References 2

  • github.com https://github.com/aaPanel/aaPanel/issues/74
    ExploitThird Party Advisory
  • ssd-disclosure.com https://ssd-disclosure.com/ssd-advisory-aapanel-cswh-to-rce/
    ExploitThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.