How severe is CVE-2024-21726?

CVE-2024-21726 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.

Is CVE-2024-21726 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 49% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21726?

CVE-2024-21726 affects Joomla Joomla!. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21726?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-21726 have an EU (EUVD) identifier?

Yes. CVE-2024-21726 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19342.

When was CVE-2024-21726 published?

CVE-2024-21726 was published on 2024-02-29 and last updated on 2026-06-17.

CVE-2024-21726

CVE-2024-21726 is a medium-severity vulnerability in Joomla Joomla! with a CVSS 3.x base score of 6.5. Its EPSS exploit-prediction score of 49% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 49% (99th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19342
Weakness: CWE-79
Affected product: Joomla Joomla!
Published: 2024-02-29
Last modified: 2026-06-17

Description

Inadequate content filtering leads to XSS vulnerabilities in various components.

Frequently asked questions

What is CVE-2024-21726?: Inadequate content filtering leads to XSS vulnerabilities in various components.
How severe is CVE-2024-21726?: CVE-2024-21726 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
Is CVE-2024-21726 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 49% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21726?: CVE-2024-21726 affects Joomla Joomla!. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21726?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-21726 have an EU (EUVD) identifier?: Yes. CVE-2024-21726 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19342.
When was CVE-2024-21726 published?: CVE-2024-21726 was published on 2024-02-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*

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