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CVE-2021-37504

23
FAUCET Score

CVE-2021-37504 is a cross-site scripting (XSS) vulnerability found in jQuery-Upload-File v4.0.11, specifically affecting the fileNameStr parameter. Attackers can exploit this by uploading a file with a malicious JavaScript payload embedded in its filename, leading to the execution of arbitrary web scripts or HTML in a user's browser. Rated as MEDIUM severity with a CVSS score of 6.1, this vulnerability requires user interaction (UI:R) and has a low impact on confidentiality and integrity (C:L/I:L). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.0.11CPE matchmatch criteria
cpe:2.3:a:hayageek:jquery_upload_file:4.0.11:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.86%
Probability of exploitation in next 30 days
EPSS Percentile
54.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0086 is in the 65th percentile among its peer group of 26,220 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

npmGHSA-43x9-7hfv-mxrfmedium

jQuery-Upload-File XSS in fileNameStr

Feb 26, 2022

References

ajax.googleapis.com / ajax/libs/jquery/1.9.1/jquery.min.js
Third Party Advisory
hayageek.github.io / jQuery-Upload-File/4.0.11/jquery.uploadfile.min.js
Third Party Advisory
hayageek.github.io / jQuery-Upload-File/4.0.11/uploadfile.css
Third Party Advisory
github.com / hayageek/jquery-upload-file/blob/master/js/jquery.uploadfile.js
Third Party Advisory
raw.githubusercontent.com / hayageek/jquery-upload-file/master/js/jquery.uploadfile.js
Third Party Advisory