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.NET
.NET NuGet
Not in CISA KEV
HIGH severity

CVE-2020-7685 — UmbracoForms

HIGH

CVE-2020-7685 is a high-severity (CVSS 7.5) CWE-1188 vulnerability in UmbracoForms. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Insecure defaults in UmbracoForms

Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Oct 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.9%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs60th percentile — riskier than 60% of all scored CVEsHighest risk
0.00%0.47%0.93%1.40%0.4%0.9%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
.NETUmbracoForms

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

This affects all versions of package UmbracoForms. When using the default configuration for upload forms, it is possible to upload arbitrary file types. The package offers a way for users to mitigate the issue. The users of this package can create a custom workflow and frontend validation that blocks certain file types, depending on their security needs and policies.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
.NETNuGetUmbracoFormsall versionsNo fix

Affected Products

1 product · 1 configurations
Application
umbraco formsumbraco
all

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for UmbracoForms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of UmbracoForms for CVE-2020-7685. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

This affects all versions of package UmbracoForms. When using the default configuration for upload forms, it is possible to upload arbitrary file types. The package offers a way for users to mitigate the issue. The users of this package can create a custom workflow and frontend validation that blocks certain file types, depending on their security needs and policies.
O3 Security · Impact-Aware SCA

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CVE-2020-7685: UmbracoForms: Insecure defaults