How severe is CVE-2021-4080?

CVE-2021-4080 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-4080 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4080?

CVE-2021-4080 affects Craterapp Crater. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4080?

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

When was CVE-2021-4080 published?

CVE-2021-4080 was published on 2022-01-12 and last updated on 2026-06-17.

CVE-2021-4080

CVE-2021-4080 is a high-severity vulnerability in Craterapp Crater with a CVSS 3.x base score of 8.8. 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-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Craterapp Crater
Published: 2022-01-12
Last modified: 2026-06-17

Description

crater is vulnerable to Unrestricted Upload of File with Dangerous Type

Frequently asked questions

What is CVE-2021-4080?: crater is vulnerable to Unrestricted Upload of File with Dangerous Type
How severe is CVE-2021-4080?: CVE-2021-4080 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-4080 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4080?: CVE-2021-4080 affects Craterapp Crater. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4080?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-4080 published?: CVE-2021-4080 was published on 2022-01-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:craterapp:crater:*:*:*:*:*:*:*:*

More vulnerabilities in Craterapp Crater

CVE-2022-1033 — High (CVSS 7.8): Unrestricted Upload of File with Dangerous Type in GitHub repository crater-invoice/crater prior to 6.0.6.
CVE-2023-46865 — High (CVSS 7.2): /api/v1/company/upload-logo in CompanyController.php in crater through 6.0.6 allows a superadmin to execute arbitrary…
CVE-2022-1032 — High (CVSS 7.2): Insecure deserialization of not validated module file in GitHub repository crater-invoice/crater prior to 6.0.6.
CVE-2022-0242 — High (CVSS 7.2): Unrestricted Upload of File with Dangerous Type in GitHub repository crater-invoice/crater prior to 6.0.
CVE-2022-0514 — Medium (CVSS 6.5): Business Logic Errors in GitHub repository crater-invoice/crater prior to 6.0.5.
CVE-2022-0372 — Medium (CVSS 5.4): Cross-site Scripting (XSS) - Stored in Packagist bytefury/crater prior to 6.0.2.

All CVEs affecting Craterapp Crater →

Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-57700 — Critical (CVSS 10.0): Unrestricted Upload of File with Dangerous Type vulnerability in Daan.Dev OMGF Pro allows Using Malicious Files. This…
CVE-2025-69129 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in WordPress & WooCommerce Scraper Plugin, Import Data from Any Site <= 1.0.7…
CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…

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