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CRITICAL severity

Variable Tampering within joomla/input classGHSA-49fj-qp6p-q544

CRITICALFix: joomla-framework/input@2086df5

GHSA-49fj-qp6p-q544 is a critical-severity (CVSS 9.8) vulnerability in joomla/input. A fix is available for joomla/input — see the affected versions and patch details below.

Also known asBIT-joomla-2022-23799CVE-2022-23799
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.2%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs69th percentile — riskier than 69% of all scored CVEsHighest risk
0.00%0.58%1.15%1.73%0.0%1.2%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
🐘joomla/input

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

An issue was discovered in Joomla! 4.0.0 through 4.1.0. Under specific circumstances, JInput pollutes method-specific input bags with $_REQUEST data.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistjoomla/input≥ 2.0.0&&< 2.0.22.0.2composer require joomla/input:^2.0.2

Affected Products

1 product · 1 configurations
Application
joomla\!joomla
≥ 4.0.0 && ≤ 4.1.0
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 joomla/input, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update joomla/input to 2.0.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-49fj-qp6p-q544 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

An issue was discovered in Joomla! 4.0.0 through 4.1.0. Under specific circumstances, JInput pollutes method-specific input bags with $_REQUEST data.
O3 Security · Impact-Aware SCA

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Variable Tampering within joomla/input class (Critical 9.8)