CVE-2026-21630
CVE-2026-21630 is a high-severity vulnerability in Joomla Joomla! with a CVSS 3.x base score of 8.8. 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-89.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v4: 6.9
- EPSS exploit prediction: 0% (26th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-17855
- Weakness: CWE-89
- Affected product: Joomla Joomla!
- Published:
- Last modified:
Description
Improperly built order clauses lead to a SQL injection vulnerability in the articles webservice endpoint.
Frequently asked questions
- What is CVE-2026-21630?
- Improperly built order clauses lead to a SQL injection vulnerability in the articles webservice endpoint.
- How severe is CVE-2026-21630?
- CVE-2026-21630 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-21630 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-21630?
- CVE-2026-21630 affects Joomla Joomla!. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-21630?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-21630 have an EU (EUVD) identifier?
- Yes. CVE-2026-21630 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17855.
- When was CVE-2026-21630 published?
- CVE-2026-21630 was published on 2026-04-01 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*
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