How severe is CVE-2021-37504?

CVE-2021-37504 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-37504 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37504?

CVE-2021-37504 affects Hayageek Jquery Upload File. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37504?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-37504 published?

CVE-2021-37504 was published on 2022-02-25 and last updated on 2026-07-05.

CVE-2021-37504

CVE-2021-37504 is a medium-severity vulnerability in Hayageek Jquery Upload File with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Hayageek Jquery Upload File
Published: 2022-02-25
Last modified: 2026-07-05

Description

A cross-site scripting (XSS) vulnerability in the fileNameStr parameter of jQuery-Upload-File v4.0.11 allows attackers to execute arbitrary web scripts or HTML via a crafted file with a Javascript payload in the file name.

Frequently asked questions

What is CVE-2021-37504?: A cross-site scripting (XSS) vulnerability in the fileNameStr parameter of jQuery-Upload-File v4.0.11 allows attackers to execute arbitrary web scripts or HTML via a crafted file with a Javascript payload in the file name.
How severe is CVE-2021-37504?: CVE-2021-37504 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-37504 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37504?: CVE-2021-37504 affects Hayageek Jquery Upload File. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37504?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-37504 published?: CVE-2021-37504 was published on 2022-02-25 and last updated on 2026-07-05.

References

Affected products (1)

cpe:2.3:a:hayageek:jquery_upload_file:4.0.11:*:*:*:*:*:*:*

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CVE-2018-9207 — Critical (CVSS 9.8): Arbitrary file upload in jQuery Upload File <= 4.0.2

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