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MEDIUM severity

CVE-2021-28381 — vhs

MEDIUM

CVE-2021-28381 is a medium-severity (CVSS 5.4) SQL Injection vulnerability in fluidtypo3/vhs. A fix is available for fluidtypo3/vhs — see the affected versions and patch details below.

SQL injection in vhs (aka VHS: Fluid ViewHelpers)

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.1%probability of exploitation in next 30 days
Lower Risk+0.04%
Lower risk than most CVEs64th percentile — riskier than 64% of all scored CVEsHighest risk
0.00%0.53%1.05%1.58%0.4%1.1%Apr 26Aug 26Oct 26

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

How urgent is this, really

CVE-2021-28381 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

1 pkg affected
🐘fluidtypo3/vhs

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

The vhs (aka VHS: Fluid ViewHelpers) extension before 5.1.1 for TYPO3 allows SQL injection via isLanguageViewHelper.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistfluidtypo3/vhsall versions5.1.1composer require fluidtypo3/vhs:^5.1.1

Affected Products

1 product · 1 configurations
Application
vhsvhs_project
< 5.1.1
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 fluidtypo3/vhs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update fluidtypo3/vhs to 5.1.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-28381 is resolved across your whole dependency graph.

  3. Workarounds

    Until you can upgrade, make sure every query built from user input uses parameterised statements or a prepared-statement API rather than string concatenation, and reduce the database account's privileges so an injected query cannot read or alter data beyond what the feature needs.

Frequently Asked Questions

The vhs (aka VHS: Fluid ViewHelpers) extension before 5.1.1 for TYPO3 allows SQL injection via isLanguageViewHelper.
O3 Security · Impact-Aware SCA

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CVE-2021-28381: vhs SQL Injection — Fixed in 5.1.1