CVE-2026-55405 | BDVDB-2026-346901 Detail
langchain4jlangchain4j
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact low, availability impact low. Attack vector: network.
Weaknesses#
- CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
References#
- https://github.com/langchain4j/langchain4j/security/advisories/GHSA-2mfg-cc43-9pcj
- https://github.com/langchain4j/langchain4j/commit/13a0698bdfaf105d8aaf0367881df51358596219
- https://github.com/langchain4j/langchain4j/commit/1bc1f60aa58ef5c3c1703caf73362482480351cf
- https://github.com/langchain4j/langchain4j/commit/8805d5d128694302f1b0a2650174186862f669e7
- https://github.com/langchain4j/langchain4j/commit/ce96291dfb243c7f6753b5d65c7a77914642314f
- https://github.com/langchain4j/langchain4j/commit/f14a10ce77e4ea1b8277f67d6a81f46abd7a5bc2
- https://github.com/langchain4j/langchain4j/releases/tag/1.16.3
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.