A flaw was found in the mysql-wsrep component of mariadb. Lack of input sanitization in `wsrep_sst_method` allows for command injection that can be exploited by a remote attacker to execute arbitrary commands on galera cluster nodes. This threatens the system's confidentiality, integrity, and availability. This flaw affects mariadb versions before 10.1.47, before 10.2.34, before 10.3.25, before 10.4.15 and before 10.5.6.
An official patch is available. Apply the patch as soon as possible.
CVSS v4.0 Metrics
Exploitability
Attack VectorNetwork
ComplexityHigh
RequirementsPresent
PrivilegesNone
User InteractionNone
Threat
Exploit MaturityUnreported
Vulnerable System
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
Subsequent System
ConfidentialityNone
IntegrityNone
AvailabilityNone
Supplemental
SafetyNegligible
AutomatableYes
RecoveryAutomatic
Value DensityConcentrated
UrgencyMedium
Patch StatusOfficial Patch
Change Log
| Date | Source | Changes | Score |
|---|
| 2026-07-21 | nvd | AV: P→N, PR: H→N, UI: A→N, VC: N→H, VI: N→H, VA: N→H | 0.0 → 7.2 |
| 2026-07-21 | nvd | patch: Unavailable→Official Patch | 0.0 → 0.0 |
| 2026-07-21 | cve.org | initial, patch: Unavailable | 0.0 |
Affected Software
| Vendor | Product | Version |
|---|
| debian | debian_linux | 10.0 |
| debian | debian_linux | 9.0 |
| galeracluster | galera_cluster_for_mysql | ≥ 5.6, < 5.6.49 |
| galeracluster | galera_cluster_for_mysql | ≥ 5.7, < 5.7.31 |
| galeracluster | galera_cluster_for_mysql | ≥ 8.0, < 8.0.21 |
| mariadb | mariadb | ≥ 10.1.0, < 10.1.47 |
| mariadb | mariadb | ≥ 10.2.0, < 10.2.34 |
| mariadb | mariadb | ≥ 10.3.0, < 10.3.25 |
| mariadb | mariadb | ≥ 10.4.0, < 10.4.15 |
| mariadb | mariadb | ≥ 10.5.0, < 10.5.6 |
| n/a | mariadb | mariadb 10.1.47, mariadb 10.2.34, mariadb 10.3.25, mariadb 10.4.15, mariadb 10.5.6 |
| percona | xtradb_cluster | < 5.6.49-28.42.2 |
| percona | xtradb_cluster | ≥ 5.7, < 5.7.31-31.45.2 |
| percona | xtradb_cluster | ≥ 8.0, < 8.0.20-11.2 |
Published: 2021-05-27
