CVE-2026-48903
CVE-2026-48903 is a medium-severity vulnerability in Joomla Joomla! with a CVSS 3.x base score of 6.1. 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-79.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- CVSS v4: 6.9
- EPSS exploit prediction: 0% (4th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-31891
- Weakness: CWE-79
- Affected product: Joomla Joomla!
- Published:
- Last modified:
Description
Inadequate content filtering within the checkAttribute methods leads to XSS vulnerabilities in various components.
Frequently asked questions
- What is CVE-2026-48903?
- Inadequate content filtering within the checkAttribute methods leads to XSS vulnerabilities in various components.
- How severe is CVE-2026-48903?
- CVE-2026-48903 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2026-48903 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-48903?
- CVE-2026-48903 affects Joomla Joomla!. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-48903?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-48903 have an EU (EUVD) identifier?
- Yes. CVE-2026-48903 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31891.
- When was CVE-2026-48903 published?
- CVE-2026-48903 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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