CVE-2020-15658

The code for downloading files did not properly take care of special characters, which led to an attacker being able to cut off the file ending at an earlier position, leading to a different file type being downloaded than shown in the dialog. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

• CWE-754

• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlThird Party Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1637745Issue Tracking, Permissions Required, Vendor Advisory
• https://usn.ubuntu.com/4443-1/Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-30/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-32/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-33/Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlThird Party Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1637745Issue Tracking, Permissions Required, Vendor Advisory
• https://usn.ubuntu.com/4443-1/Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-30/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-32/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-33/Vendor Advisory

Published

Aug 10, 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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