CVE-2026-97869: langchain4j

Affected products, as the CNA wrote them
Vendor	Product	Versions
Not given	langchain4j	affected 1.5.3-beta10 affected 1.11.10-beta18 affected 1.18.1-beta27 unaffected 1.5.3-beta11 unaffected 1.11.10-beta19 unaffected 1.18.1-beta28

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
2.1	Low	4.0	CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	CNA (VulDB)Used for this record
4.1	Medium	3.1	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C	CNA (VulDB)
4.1	Medium	3.0	CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C	CNA (VulDB)
4.3	Medium	2.0	AV:N/AC:H/Au:M/C:P/I:P/A:P/E:POC/RL:OF/RC:C	CNA (VulDB)

CISA KEV Not listed.
EPSS 0.0024, the 15th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 25 Sept 2026. New records show when each source confirmed them.

Sources

References from the CNA

vuldb.com/vuln/409886 vdb-entrytechnical-description
vuldb.com/vuln/409886/cti signaturepermissions-required
vuldb.com/cve/CVE-2026-97869 third-party-advisory
vuldb.com/submit/911825 third-party-advisory
github.com/langchain4j/langchain4j/security/advisories/GHSA-gmwr-7wmf-mrjm related
github.com/langchain4j/langchain4j/releases/tag/1.18.1 patch
github.com/langchain4j/langchain4j/ product
github.com/afish3201-debug/CVE/blob/main/Insecure%20Jackson%20Default%20Typing%20Leads%20to%20Arbitrary%20Class%20Instantiation%20in%20LangChain4j%20Agentic%20Module.md exploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.