How severe is CVE-2021-3994?

CVE-2021-3994 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-3994 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3994?

CVE-2021-3994 affects Django-helpdesk Project Django-helpdesk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3994?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-3994 published?

CVE-2021-3994 was published on 2021-12-01 and last updated on 2026-06-17.

CVE-2021-3994

CVE-2021-3994 is a critical-severity vulnerability in Django-helpdesk Project Django-helpdesk with a CVSS 3.x base score of 9.6. 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: Critical (CVSS 3.x base score 9.6)
CVSS v2: 6.8
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Django-helpdesk Project Django-helpdesk
Published: 2021-12-01
Last modified: 2026-06-17

Description

django-helpdesk is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Frequently asked questions

What is CVE-2021-3994?: django-helpdesk is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
How severe is CVE-2021-3994?: CVE-2021-3994 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-3994 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3994?: CVE-2021-3994 affects Django-helpdesk Project Django-helpdesk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3994?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-3994 published?: CVE-2021-3994 was published on 2021-12-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:django-helpdesk_project:django-helpdesk:*:*:*:*:*:*:*:*

More vulnerabilities in Django-helpdesk Project Django-helpdesk

CVE-2021-3945 — Medium (CVSS 6.1): django-helpdesk is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE-2021-3950 — Medium (CVSS 5.4): django-helpdesk is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE-2018-25111 — Medium (CVSS 5.1): django-helpdesk before 1.0.0 allows Sensitive Data Exposure because of os.umask(0) in models.py.

All CVEs affecting Django-helpdesk Project Django-helpdesk →

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