CVE-2026-65888
Auth bypass in Balbooa Gridbox allows login as any user (account takeover).
Is CVE-2026-65888 being exploited?
Not confirmed. CVE-2026-65888 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 0.29% probability of exploitation in the next 30 days.
How severe is CVE-2026-65888?
CVE-2026-65888 is rated Critical with a CVSS score of 10.0. 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-2026-65888?
Yes. A fix has been recorded for CVE-2026-65888. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-65888 affect?
CVE-2026-65888 affects Joomla - Balbooa Gridbox extension < 2.20.2. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-65888?
Upgrade Gridbox to 2.20.2+; verify admin accounts and rotate high‑privilege credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote account takeover: attacker can authenticate as any user, including admins, via the socialLogin method.
Immediate action required
- affected1.0.0-2.20.1
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.