gcdRadar
archive/Patch now/AIR-2026-0198
closedclosed 25 Sep 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-97869: LangChain4j deserialization flaw in AgenticScopeSerializer

LangChain4j

A deserialization flaw in LangChain4j-agentic allows remote attackers to execute arbitrary code via crafted input to AgenticScopeSerializer.fromJson. Patches have been released in versions 1.5.3-beta11, 1.11.10-beta19, and 1.18.1-beta28.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
4.1
EPSS
<0.01 · top 85% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
25 Sep 2026
last update
25 Sep 2026
CVE ids
CVE-2026-97869other records

Timeline · 1

  1. 25 Sep 2026CVE-2026-97869: A flaw has been found in langchain4j up to 1.5.3-beta10/1.11.10-beta18/1.18.1-beta27.

Sources · 1

Advisories and databases

  1. 2026-09-25
    CVE-2026-97869: A flaw has been found in langchain4j up to 1.5.3-beta10/1.11.10-beta18/1.18.1-beta27.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-97869

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerabilitySupply chain
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
AML.T0010 AI Supply Chain Compromise
tags
langchain4jdeserialization
dates
happened 25 Sep 2026 · first reported 25 Sep 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 06:33Z · updated 2026-10-18 06:33Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-97869: LangChain4j deserialization flaw in AgenticScopeSerializer

https://gcdradar.vercel.app/incidents/cve-2026-97869-langchain4j-deserialization-flaw-in-agenticsc · AIR-2026-0198 · closed 2026-09-25

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-09-25
- AI role: Attack on AI
- Products: LangChain4j
- CVE ids: CVE-2026-97869
- CVSS: 4.1

## Summary

A deserialization flaw in LangChain4j-agentic allows remote attackers to execute arbitrary code via crafted input to AgenticScopeSerializer.fromJson. Patches have been released in versions 1.5.3-beta11, 1.11.10-beta19, and 1.18.1-beta28.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-09-25: CVE-2026-97869: A flaw has been found in langchain4j up to 1.5.3-beta10/1.11.10-beta18/1.18.1-beta27. (https://nvd.nist.gov/vuln/detail/CVE-2026-97869)

## Sources

- 2026-09-25 NVD: CVE-2026-97869: A flaw has been found in langchain4j up to 1.5.3-beta10/1.11.10-beta18/1.18.1-beta27. https://nvd.nist.gov/vuln/detail/CVE-2026-97869

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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