CVE-2026-48901

HIGH

Published May 26, 2026 Modified May 28, 2026 CWE-524

Description

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

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CVSS v3.1 Score

7.5

HIGH

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

EPSS — Exploit Prediction

0.0025

Probability of exploitation

0.15%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-524 CWE-524

Affected Products

Vendor	Product	Versions
joomla	joomla\!	4.0.0 — 5.4.6
joomla	joomla\!	6.0.0 — 6.1.1

References

Advisories & Patches

https://developer.joomla.org/security-centre/1049-20260517-core-incorrect-cache-key-construction-for-inputfilter-objects.html

Frequently Asked Questions

What is CVE-2026-48901? +

The InputFilter::getInstance() method omitted a security sensitive parameter from the instance cache key. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-48901? +

CVE-2026-48901 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0025, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-48901? +

CVE-2026-48901 affects products from joomla, specifically: joomla\!. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-48901? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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