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Not in CISA KEV
MEDIUM severity

CVE-2020-27852 — gravityforms

MEDIUM

CVE-2020-27852 is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in wp-premium/gravityforms. A fix is available for wp-premium/gravityforms — see the affected versions and patch details below.

Gravity Forms stored Cross-Site Scripting (XSS) vulnerability in the survey feature

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.8%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs57th percentile — riskier than 57% of all scored CVEsHighest risk
0.00%0.43%0.86%1.29%0.2%0.8%May 26Sep 26Nov 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
🐘wp-premium/gravityforms

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

Description

A stored Cross-Site Scripting (XSS) vulnerability in the survey feature in Rocketgenius Gravity Forms before 2.4.21 allows remote attackers to inject arbitrary web script or HTML via a textarea field. This code is interpreted by users in a privileged role (Administrator, Editor, etc.).

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistwp-premium/gravityforms≥ 2.4&&< 2.4.212.4.21composer require wp-premium/gravityforms:^2.4.21

Affected Products

1 product · 1 configurations
Application
gravityformsrocketgenius
< 2.4.21
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update wp-premium/gravityforms to 2.4.21 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-27852 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

A stored Cross-Site Scripting (XSS) vulnerability in the survey feature in Rocketgenius Gravity Forms before 2.4.21 allows remote attackers to inject arbitrary web script or HTML via a textarea field. This code is interpreted by users in a privileged role (Administrator, Editor, etc.).
O3 Security · Impact-Aware SCA

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CVE-2020-27852: gravityforms XSS — Fixed in 2.4.21