How severe is CVE-2026-49261?

CVE-2026-49261 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-49261 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-49261?

CVE-2026-49261 primarily affects Mariadb. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-49261?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-49261 have an EU (EUVD) identifier?

Yes. CVE-2026-49261 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36269.

When was CVE-2026-49261 published?

CVE-2026-49261 was published on 2026-06-11 and last updated on 2026-08-12.

CVE-2026-49261

CVE-2026-49261 is a critical-severity vulnerability in Mariadb with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36269
Weakness: CWE-78
Affected product: Mariadb
Published: 2026-06-11
Last modified: 2026-08-12

Description

MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through 10.11.17, 11.4.1 through 11.4.11, 11.8.1 through 11.8.7, and 12.3.1 with `wsrep_notify_cmd` enabled would execute shell commands embedded in the name of the joiner node. This is fixed in 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2. As a workaround, anyone who cannot upgrade now should disable `wsrep_notify_cmd`.

Frequently asked questions

What is CVE-2026-49261?: MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through 10.11.17, 11.4.1 through 11.4.11, 11.8.1 through 11.8.7, and 12.3.1 with `wsrep_notify_cmd` enabled would execute shell commands embedded in the name of the joiner node. This is fixed in 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2. As a workaround, anyone who cannot upgrade now should disable `wsrep_notify_cmd`.
How severe is CVE-2026-49261?: CVE-2026-49261 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-49261 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-49261?: CVE-2026-49261 primarily affects Mariadb. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-49261?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-49261 have an EU (EUVD) identifier?: Yes. CVE-2026-49261 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36269.
When was CVE-2026-49261 published?: CVE-2026-49261 was published on 2026-06-11 and last updated on 2026-08-12.

References

Affected products (2)

cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
cpe:2.3:a:mariadb:mariadb:12.3.1:*:*:*:*:*:*:*

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