CVE-2026-71574
ACL bypass allows unauthorized mutation via Joomla webservice endpoints.
Is CVE-2026-71574 being exploited?
Not confirmed. CVE-2026-71574 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.20% probability of exploitation in the next 30 days.
How severe is CVE-2026-71574?
CVE-2026-71574 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-71574?
Yes. A fix has been recorded for CVE-2026-71574. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-71574 affect?
CVE-2026-71574 affects Joomla Core 4.0.0-5.4.7, Joomla Core 6.0.0-6.1.2, Joomla webservice endpoints. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-71574?
Apply vendor patch or upgrade to fixed Joomla versions and restrict webservice access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attackers can perform unauthorized mutations (create/update/delete content, modify users/config) via webservice endpoints, enabling defacement, persistence, or account takeover.
Immediate action required
- affected4.0.0-5.4.6
- affected6.0.0-6.1.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.