7.5

CVE-2026-48901: Joomla! Core - [20260517] - Incorrect Cache Key Construction for InputFilter objects

Analyzed
Published 26-05-2026Last modified 05-06-2026

Vulnerability summary

CVE-2026-48901 is a high (CVSS 7.5) vulnerability in joomla! project joomla! cms. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 34.7% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.42%
0%100%
Low · +0.17 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 26-05-2026
    PublishedVulnerability first disclosed.
  2. 05-06-2026
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.42%

Chance of exploitation in the next 30 days

Percentile

35%

Versus all other CVEs

30-day change

Increase +0.17 pp

From 0.24% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Joomla1 product
  • joomla\!≥ 4.0.0, < 5.4.6 | ≥ 6.0.0, < 6.1.1
Joomla! project1 product

2 vendors · 2 products

References

1 links