Critical (9.8) in apache shardingsphere. EPSS 34% chance of exploitation in the next 30 days. Fixed in org.apache.shardingsphere:shardingsphere 4.0.1.
In Apache ShardingSphere(incubator) 4.0.0-RC3 and 4.0.0, the ShardingSphere's web console uses the SnakeYAML library for parsing YAML inputs to load datasource configuration. SnakeYAML allows to unmarshal data to a Java type By using the YAML tag. Unmarshalling untrusted data can lead to security flaws of RCE.
Severity
CVSS 3.1
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
34% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)