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Vulnerabilities / CVE-2025-68665

critical

CVE-2025-68665

langchain-core: LangChain: Arbitrary Code Execution via Serialization Injection

Published Modified CWE 502
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
GHSA8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Red Hat8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by GHSA (high), Red Hat (high).

Description

LangChain is a framework for building LLM-powered applications. Prior to @langchain/core versions 0.3.80 and 1.1.8, and prior to langchain versions 0.3.37 and 1.2.3, a serialization injection vulnerability exists in LangChain JS's toJSON() method (and subsequently when string-ifying objects using JSON.stringify(). The method did not escape objects with 'lc' keys when serializing free-form data in kwargs. The 'lc' key is used internally by LangChain to mark serialized objects. When user-controlled data contains this key structure, it is treated as a legitimate LangChain object during deserialization rather than plain user data. This issue has been patched in @langchain/core versions 0.3.80 and 1.1.8, and langchain versions 0.3.37 and 1.2.3

Affected packages and fixed versions

SourcePackageFixed in
chainguardkibana-8.17, kibana-8.18, kibana-8.19 and 6 more8.17.10-r6 and 7 more
echo npm::Echo OSV@langchain/core, langchain0.3.37
minimoskibana-8.19, kibana-9.2, kibana-9.38.19.15-r0 and 2 more
npm::GitHub Security Advisory npm@langchain/core, langchain1.1.8, 0.3.80 and 1 more
Show all 16 entries from 4 sources
SourcePackageFixed in
chainguardkibana-8.178.17.10-r6
chainguardkibana-8.188.18.8-r6
chainguardkibana-8.198.19.9-r2
chainguardkibana-9.09.0.8-r5
chainguardkibana-9.19.1.9-r1
chainguardkibana-9.29.2.3-r1
chainguardlangfuse-22.95.12-r4
chainguardlangfuse-fips-22.95.12-r4
chainguardlibrechat0.8.1-r1
echo npm::Echo OSV@langchain/core0.3.37
echo npm::Echo OSVlangchain0.3.37
minimoskibana-8.198.19.15-r0
minimoskibana-9.29.2.5-r0
minimoskibana-9.39.3.4-r0
npm::GitHub Security Advisory npm@langchain/core1.1.8, 0.3.80
npm::GitHub Security Advisory npmlangchain1.2.3, 0.3.37

References

All 10 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.