CVE-2026-66491
Path traversal in Phoca Commander allows arbitrary file read on Joomla sites
Is CVE-2026-66491 being exploited?
Not confirmed. CVE-2026-66491 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 0.38% probability of exploitation in the next 30 days.
How severe is CVE-2026-66491?
CVE-2026-66491 is rated High with a CVSS score of 8.2. 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-2026-66491?
Not known from our data. No patch reference has been recorded for CVE-2026-66491, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-66491 affect?
CVE-2026-66491 affects Phoca Commander 1.0.0-6.1.3, Joomla websites using Phoca Commander, PHP web servers hosting the extension. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-66491?
Update to patched release or remove extension; restrict access and rotate exposed creds
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote path-traversal lets attackers read arbitrary files (configs, credentials), exposing secrets and aiding further compromise.
Immediate action required
- affected1.0.0-6.1.3
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.