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Echo: langchain-core: security update to 0.3.85

high Tenable Self-Hosted Container Security Plugin ID 464783

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - LangChain is a framework for building agents and LLM-powered applications. Prior to 0.3.85 and 1.3.3,
 LangChain contains older runtime code paths that deserialize run inputs, run outputs, or other
 application-controlled payloads using overly broad object allowlists. These paths may call load() with
 allowed_objects="all". This does not enable arbitrary Python object deserialization, but it does allow any
 trusted LangChain-serializable object to be revived, which is broader than these runtime paths require. As
 a result, attacker-supplied LangChain serialized constructor dictionaries may cause trusted runtime paths
 to instantiate classes with untrusted constructor arguments. This vulnerability is fixed in 0.3.85 and
 1.3.3. (CVE-2026-44843)

Solution

Update the langchain-core library and its related packages to version 0.3.85 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-44843

Plugin Details

Severity: High

ID: 464783

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.2

Percentile: 96.59

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:P/A:N

CVSS Score Source: CVE-2026-44843

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/1/2026

Vulnerability Publication Date: 5/8/2026

Reference Information

CVE: CVE-2026-44843