CVE-2021-23956

medium

Description

An ambiguous file picker design could have confused users who intended to select and upload a single file into uploading a whole directory. This was addressed by adding a new prompt. This vulnerability affects Firefox < 85.

References

https://www.mozilla.org/security/advisories/mfsa2021-03/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-10877

https://bugzilla.mozilla.org/show_bug.cgi?id=1338637

Details

Source: Mitre, NVD

Published: 2021-02-26

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N