Review reviewHigh

CVE-2026-48901

Joomla! Project Joomla! CMS, joomla!

The InputFilter::getInstance() method omitted a security sensitive parameter from the instance cache key.

CVSS
7.5
EPSS
0.24%
15.8% percentile
CISA KEV
Not listed
Published
2026.05.27
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.24%
Technical severityCVSS 7.5

Vulnerability overview

The InputFilter::getInstance() method omitted a security sensitive parameter from the instance cache key.

Affected product and versions

Product
Joomla! Project Joomla! CMS, joomla!
Affected versions
>= 4.0.0-5.4.5, >= 6.0.0-6.1.0, >= 4.0.0 < 5.4.6, >= 6.0.0 < 6.1.1
Fixed versions
5.4.6, 6.1.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Joomla! Project Joomla! CMS, joomla! and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
CWE-524