Vulnerability Details : CVE-2021-23956
Potential exploit
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.
Products affected by CVE-2021-23956
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-23956
0.21%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 59 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-23956
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:N |
8.6
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
2.8
|
3.6
|
NIST |
References for CVE-2021-23956
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1338637
1338637 - (CVE-2021-23956) Arbitrary local files disclosure in input[webkitdirectory]Exploit;Issue Tracking;Patch;Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-03/
Security Vulnerabilities fixed in Firefox 85 — MozillaRelease Notes;Vendor Advisory
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