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CVE-2026-55405

7.6 · HIGH

LangChain4j is a Java library for building LLM-powered applications on the JVM.

Published Jul 10, 2026CWE-89EPSS 0.47%

Overview

CVE-2026-55405 is a high-severity vulnerability. It was published on July 10, 2026 and has a CVSS 3.1 base score of 7.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/langchain4j/langchain4j/commit/13a0698bdfaf105d8aaf0367881df51358596219GitHubgithub.com/langchain4j/langchain4j/commit/1bc1f60aa58ef5c3c1703caf73362482480351cfGitHubgithub.com/langchain4j/langchain4j/commit/8805d5d128694302f1b0a2650174186862f669e7GitHubgithub.com/langchain4j/langchain4j/commit/ce96291dfb243c7f6753b5d65c7a77914642314fGitHubgithub.com/langchain4j/langchain4j/commit/f14a10ce77e4ea1b8277f67d6a81f46abd7a5bc2GitHubgithub.com/langchain4j/langchain4j/releases/tag/1.16.3GitHubgithub.com/langchain4j/langchain4j/security/advisories/GHSA-2mfg-cc43-9pcj

How CyberStrike helps

Frequently asked questions

What is CVE-2026-55405?

CVE-2026-55405 is a high-severity vulnerability. It was published on July 10, 2026 and has a CVSS 3.1 base score of 7.6 (HIGH).

How severe is CVE-2026-55405?

This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-55405?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-55405?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-55405 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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