Affects a widely used DB (MariaDB) with critical RCE risk across multiple releases.
CVE-2026-49261
RCE via wsrep_notify_cmd in joiner node name (MariaDB Galera).
Is CVE-2026-49261 being exploited?
Not confirmed. CVE-2026-49261 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 1.6% probability of exploitation in the next 30 days.
How severe is CVE-2026-49261?
CVE-2026-49261 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-2026-49261?
Yes. A fix has been recorded for CVE-2026-49261. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-49261 affect?
CVE-2026-49261 affects MariaDB Server (Galera). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-49261?
Upgrade to fixed versions or disable wsrep_notify_cmd
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution by injecting shell commands through the joiner node name when wsrep_notify_cmd is enabled.
Immediate action required
- affected>= 10.6.1 and < 10.6.27
- affected>= 10.11.1 and < 10.11.18
- affected>= 11.4.1 and < 11.4.12
- affected>= 11.8.1 and < 11.8.8
- affected= 12.3.1
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.