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).

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

Published

Aug 2, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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