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Not in CISA KEV
HIGH severity

CVE-2022-25271 — core

HIGH

CVE-2022-25271 is a high-severity (CVSS 7.5) Improper Input Validation vulnerability in drupal/core. A fix is available for drupal/core — see the affected versions and patch details below.

Improper input validation in Drupal core

Also known asBIT-drupal-2022-25271DRUPAL-CORE-2022-003GHSA-fmfv-x8mp-5767
Published
Updated
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Oct 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs69th percentile — riskier than 69% of all scored CVEsHighest risk
0.75%1.09%1.43%1.78%1.2%1.3%1.3%Jul 26Sep 26Oct 26

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

How urgent is this, really

CVE-2022-25271 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

3 pkgs affected
🐘drupal/core🐘drupal/core🐘drupal/core

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

Drupal core's form API has a vulnerability where certain contributed or custom modules' forms may be vulnerable to improper input validation. This could allow an attacker to inject disallowed values or overwrite data. Affected forms are uncommon, but in certain cases an attacker could alter critical or sensitive data.

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistdrupal/core≥ 9.3.0&&< 9.3.69.3.6composer require drupal/core:^9.3.6
🐘Packagistdrupal/core≥ 8.0.0&&< 9.2.139.2.13composer require drupal/core:^9.2.13
🐘Packagistdrupal/core≥ 7.0.0&&< 7.887.88composer require drupal/core:^7.88

Affected Products

2 products · 5 configurations
Application
drupaldrupal
≥ 9.3.0 && < 9.3.6
range
OS
fedorafedoraproject
2 versions
3536

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update drupal/core to 9.3.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-25271 is resolved across your whole dependency graph.

  3. Workarounds

    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

Drupal core's form API has a vulnerability where certain contributed or custom modules' forms may be vulnerable to improper input validation. This could allow an attacker to inject disallowed values or overwrite data. Affected forms are uncommon, but in certain cases an attacker could alter critical or sensitive data.
O3 Security · Impact-Aware SCA

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CVE-2022-25271: core — Fixed in 9.3.6