Skip to content
CVE PROGRAM SOURCE RECORD7.6 High

CVE-2026-55405

LangChain4j: SQL injection via metadata filters in langchain4j-mariadb and langchain4j-pgvector

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

LangChain4j is a Java library for building LLM-powered applications on the JVM. Prior to 1.2.1-beta8, 1.5.1-beta11, 1.11.8-beta19, and 1.16.3-beta26, the MariaDB and pgvector embedding stores build metadata-filter SQL by string-concatenating filter keys, and in MariaDB string values, directly into the query without adequate escaping. A crafted metadata key in EmbeddingSearchRequest.filter() can break out of its SQL context and inject arbitrary SQL into the statements executed by the stores' search and removeAll(Filter) operations, enabling blind data exfiltration, denial of service via sleep functions, and deletion of arbitrary rows through removeAll(Filter). This issue is fixed in langchain4j-mariadb and langchain4j-pgvector versions 1.2.1-beta8, 1.5.1-beta11, 1.11.8-beta19, and 1.16.3-beta26.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

langchain4j langchain4j

  • < 1.2.1-beta8affected
  • >= 1.3.0-beta9, < 1.5.1-beta11affected
  • >= 1.6.0-beta12, < 1.11.8-beta19affected
  • >= 1.12.1-beta21, < 1.16.3-beta26affected

References