CVE-2026-55405

HIGHPre-NVD 7.67.6—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 60% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.6
EG Score
7.6HIGHmedium confidence
EG Risk
34
EG Risk 34/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity76% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

Published

June 17, 2026

Last Modified

July 13, 2026

Advisory Details (7)

Auto-updated Jul 10, 2026
Patch available. Sources: github_commit, github_release, github.
githubMentions a patch (unverified)

SQL injection via metadata filters in langchain4j-mariadb and langchain4j-pgvector · Advisory · langchain4j/langchain4j · GitHub

https://github.com/langchain4j/langchain4j/security/advisories/GHSA-2mfg-cc43-9pcj
github_release Patch Available

1.16.3 and 1.16.3-beta26

Patch available: langchain4j/langchain4j 1.16.3

https://github.com/langchain4j/langchain4j/releases/tag/1.16.3
github_commit

commit f14a10ce77e4 (langchain4j/langchain4j)

Fix landed in langchain4j/langchain4j commit f14a10ce77e4 — awaiting tagged release

https://github.com/langchain4j/langchain4j/commit/f14a10ce77e4ea1b8277f67d6a81f46abd7a5bc2
github_commit Patch Available

commit ce96291dfb24 (langchain4j/langchain4j)

Patch available: langchain4j/langchain4j 1.17.0 (contains commit ce96291dfb24)

https://github.com/langchain4j/langchain4j/commit/ce96291dfb243c7f6753b5d65c7a77914642314f
github_commit

commit 8805d5d12869 (langchain4j/langchain4j)

Fix landed in langchain4j/langchain4j commit 8805d5d12869 — awaiting tagged release

https://github.com/langchain4j/langchain4j/commit/8805d5d128694302f1b0a2650174186862f669e7
github_commit

commit 1bc1f60aa58e (langchain4j/langchain4j)

Fix landed in langchain4j/langchain4j commit 1bc1f60aa58e — awaiting tagged release

https://github.com/langchain4j/langchain4j/commit/1bc1f60aa58ef5c3c1703caf73362482480351cf
github_commit Patch Available

commit 13a0698bdfaf (langchain4j/langchain4j)

Patch available: langchain4j/langchain4j 1.16.3 (contains commit 13a0698bdfaf)

https://github.com/langchain4j/langchain4j/commit/13a0698bdfaf105d8aaf0367881df51358596219

Vendor Advisories for CVE-2026-55405(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 1 ecosystem)
Maven(2)
PackageVulnerable rangeFix by version rangeDependents
dev.langchain4j:langchain4j-mariadb1.12.1-beta21 ... 1.16.2-beta26 (11 versions)
  • every version up to 1.2.1-beta8: fixed in 1.2.1-beta8
  • 1.3.0-beta9 up to 1.5.1-beta11: fixed in 1.5.1-beta11
  • 1.6.0-beta12 up to 1.11.8-beta19: fixed in 1.11.8-beta19
  • 1.12.1-beta21 up to 1.16.3-beta26: fixed in 1.16.3-beta26
—
dev.langchain4j:langchain4j-pgvector1.12.1-beta21 ... 1.16.2-beta26 (11 versions)
  • every version up to 1.2.1-beta8: fixed in 1.2.1-beta8
  • 1.3.0-beta9 up to 1.5.1-beta11: fixed in 1.5.1-beta11
  • 1.6.0-beta12 up to 1.11.8-beta19: fixed in 1.11.8-beta19
  • 1.12.1-beta21 up to 1.16.3-beta26: fixed in 1.16.3-beta26
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 115 total refreshes for this CVE.

  1. 2026-10-10 20:00 UTCEPSS rescore
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  1. 2026-09-13 16:47 UTCEPSS rescore
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-55405?
CVE-2026-55405 is a high vulnerability published on June 17, 2026. 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…
When was CVE-2026-55405 disclosed?
CVE-2026-55405 was first published on June 17, 2026, with the most recent update on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55405 actively exploited?
CVE-2026-55405 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-55405?
CVE-2026-55405 has a CVSS base score of 7.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-55405?
A fix for CVE-2026-55405 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-55405 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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