CVE-2026-48904
CVE-2026-48904 is a critical-severity vulnerability in Joomla Joomla! with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v4: 8.2
- EPSS exploit prediction: 0% (21st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-31875
- Weakness: CWE-284
- Affected product: Joomla Joomla!
- Published:
- Last modified:
Description
An improper access check allows privelege escalation through the com_users group editing webservice endpoint.
Frequently asked questions
- What is CVE-2026-48904?
- An improper access check allows privelege escalation through the com_users group editing webservice endpoint.
- How severe is CVE-2026-48904?
- CVE-2026-48904 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-48904 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-48904?
- CVE-2026-48904 affects Joomla Joomla!. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-48904?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-48904 have an EU (EUVD) identifier?
- Yes. CVE-2026-48904 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31875.
- When was CVE-2026-48904 published?
- CVE-2026-48904 was published on 2026-05-26 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*
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