# CVE-2026-49261: MariaDB server has unsafe parameter handling in `wsrep_notify_cmd` > Attackers can execute arbitrary shell commands via node names if wsrep_notify_cmd is enabled in MariaDB server. - **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 11 Jun 2026 - **Updated:** 12 Aug 2026 - **Also known as:** ALSA-2026:33093, ALSA-2026:33412, ALSA-2026:33481, ALSA-2026:33482, BELL-CVE-2026-49261, BIT-mariadb-2026-49261, BIT-mariadb-min-2026-49261, BIT-mysql-client-2026-49261, DEBIAN-CVE-2026-49261, ECHO-df2b-c938-96c6, GHSA-3p3m-4x7c-p4pw, MINI-3pfq-mqwx-fcgf, MINI-8fvr-96m9-fp86, MINI-f6x5-5v3g-743q, MINI-hfwv-9394-8xr4, MINI-j7vg-fcj2-qv3g, MINI-x9p9-95p4-662x, OESA-2026-2732, RHSA-2026:52848, RHSA-2026:54142, RLSA-2026:33464, ROOT-OS-DEBIAN-13-CVE-2026-49261, UBUNTU-CVE-2026-49261 ## What is CVE-2026-49261? CVE-2026-49261 is a critical command injection vulnerability in Mariadb Mariadb, published on 11 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official 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`. Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command) ## Which versions are affected by CVE-2026-49261? 3 open source packages ship an affected version, including mariadb, mariadb-min and mysql-client. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `mariadb` | Bitnami | From 10.6.1 | 10.6.27, 10.11.18, 11.4.12, 11.8.8, 12.3.2 | | `mariadb-min` | Bitnami | From 10.6.1 | 10.6.27, 10.11.18, 11.4.12, 11.8.8, 12.3.2 | | `mysql-client` | Bitnami | From 10.6.1 | 10.6.27, 10.11.18, 11.4.12, 11.8.8, 12.3.2 | | `galera` | AlmaLinux:10 | All versions | 26.4.27-1.el10_2 | | `mariadb` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-backup` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-client-utils` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-common` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-devel` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-embedded` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-embedded-devel` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-errmsg` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-gssapi-server` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-oqgraph-engine` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-pam` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-server` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-server-galera` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-server-utils` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb-test` | AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 | | `mariadb11.8` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-backup` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-client-utils` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-common` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-devel` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-embedded` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-embedded-devel` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-errmsg` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-gssapi-server` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-oqgraph-engine` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-pam` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-server` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-server-galera` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-server-utils` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `mariadb11.8-test` | AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 | | `galera` | AlmaLinux:9 | All versions | 26.4.27-1.module_el9.8.0+274+ad8c02e7 | | `galera` | AlmaLinux:9 | All versions | 26.4.27-1.module_el9.8.0+275+ff40c56f | | `galera` | AlmaLinux:9 | All versions | 26.4.27-1.module_el9.8.0+315+b08bed7e | | `mariadb` | AlmaLinux:9 | All versions | 3:10.11.18-1.module_el9.8.0+275+ff40c56f | | `mariadb` | AlmaLinux:9 | All versions | 3:10.11.18-1.module_el9.8.0+315+b08bed7e.alma.1 | | `mariadb` | AlmaLinux:9 | All versions | 3:11.8.8-1.module_el9.8.0+274+ad8c02e7 | Products: Mariadb Mariadb. ## How do I fix CVE-2026-49261? Upgrade mariadb to a fixed version for your release line: 10.6.27, 10.11.18, 11.4.12 or 11.8.8. ## Is CVE-2026-49261 being exploited? There is no known exploitation of CVE-2026-49261 in the wild and no public exploit code. ## Other vulnerabilities in Mariadb Mariadb - [CVE-2026-85746](https://insights.sbomify.com/CVE-2026-85746/): MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections (critical 9.9) - [CVE-2026-85748](https://insights.sbomify.com/CVE-2026-85748/): MariaDB: Use-after-free with a large number of SYS_REFCURSOR's (critical 9.9) - [CVE-2026-92262](https://insights.sbomify.com/CVE-2026-92262/): MariaDB: Numerous issues caused by historical #mysql50# tablename encoding bypass. (critical 9.9) - [CVE-2023-26785](https://insights.sbomify.com/CVE-2023-26785/): Code injection in n/a (critical 9.8) - [CVE-2026-97380](https://insights.sbomify.com/CVE-2026-97380/): MariaDB: GRANT PROXY with empty password incorrectly checks grantor's privileges (high 8.8) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2026-49261 and fix it if it is affected. What it is: CVE-2026-49261 is a critical command injection vulnerability in Mariadb Mariadb, published on 11 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2026-49261 in the wild and no public exploit code. Affected packages and fixed versions: - mariadb (Bitnami): affected from 10.6.1; fixed in 10.6.27, 10.11.18, 11.4.12, 11.8.8, 12.3.2 - mariadb-min (Bitnami): affected from 10.6.1; fixed in 10.6.27, 10.11.18, 11.4.12, 11.8.8, 12.3.2 - mysql-client (Bitnami): affected from 10.6.1; fixed in 10.6.27, 10.11.18, 11.4.12, 11.8.8, 12.3.2 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2026-49261/ (Markdown: https://insights.sbomify.com/CVE-2026-49261/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2026-49261 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-49261 - OSV: https://osv.dev/vulnerability/CVE-2026-49261 --- From sbomify Insights: https://insights.sbomify.com/CVE-2026-49261/ Summaries are generated and may contain mistakes; the official description above is the record.