CVE-2020-12393

The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP method of a request, which can be controlled by the website. If a user used the 'Copy as cURL' feature and pasted the command into a terminal, it could have resulted in command injection and arbitrary command execution. *Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

• CWE-78

• https://bugzilla.mozilla.org/show_bug.cgi?id=1615471Permissions Required
• https://www.mozilla.org/security/advisories/mfsa2020-16/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-17/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-18/Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1615471Permissions Required
• https://www.mozilla.org/security/advisories/mfsa2020-16/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-17/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-18/Vendor Advisory

Published

May 26, 2020

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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