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Permalink CVE-2026-14742

1.3 LOW

CVSS version (CVSS): 4.0
Attack Vector (AV): Network (N)
Attack Complexity (AC): High (H)
Attack Requirement (AT): None (N)
Privileges Required (PR): Low (L)
User Interaction (UI): None (N)
Vulnerable System Impact Confidentiality (VC): Low (L)
Vulnerable System Impact Integrity (VI): None (N)
Vulnerable System Impact Availability (VA): None (N)
Subsequent System Impact Confidentiality (SC): None (N)
Subsequent System Impact Integrity (SI): None (N)
Subsequent System Impact Availability (SA): None (N)
Exploit Maturity (E): POC (P)
Modified Attack Vector (MAV): Network (N)
Modified Attack Complexity (MAC): High (H)
Modified Attack Requirement (MAT): None (N)
Modified Privileges Required (MPR): Low (L)
Modified User Interaction (MUI): None (N)
Modified Vulnerable System Impact Confidentiality (MVC): Low (L)
Modified Vulnerable System Impact Integrity (MVI): None (N)
Modified Vulnerable System Impact Availability (MVA): None (N)
Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
Modified Subsequent System Impact Integrity (MSI): Negligible (N)
Modified Subsequent System Impact Availability (MSA): Negligible (N)
Safety (S): Not Defined (X)
Automatable (AU): Not Defined (X)
Recovery (R): Not Defined (X)
Value Density (V): Not Defined (X)
Vulnerability Response Effort (RE): Not Defined (X)
Provider Urgency (U): Not Defined (X)
Confidentiality Req. (CR): Not Defined (X)
Integrity Req. (IR): Not Defined (X)
Availability Req. (AR): Not Defined (X)

created 1 week, 4 days ago Activity log

Created suggestion 1 week, 4 days ago

langchain-ai langgraph Task Result Cache _cache.py _freeze weak hash

A vulnerability was determined in langchain-ai langgraph up to 1.2.4. The affected element is the function _freeze of the file libs/langgraph/langgraph/_internal/_cache.py of the component Task Result Cache. This manipulation of the argument default_cache_key causes use of weak hash. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is described as difficult. The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance.

References

VDB-376328 | langchain-ai langgraph Task Result Cache _cache.py _freeze weak hash vdb-entrytechnical-description
VDB-376328 | CTI Indicators (IOB, IOC, TTP, IOA) signaturepermissions-required
CVE-2026-14742 | CVE Analysis and Report third-party-advisory
Submit #849217 | langchain-ai langgraph 1.2.4 Use of Weak Hash third-party-advisory
https://github.com/langchain-ai/langgraph/issues/8009 issue-trackingexploit
https://github.com/langchain-ai/langgraph/pull/8069 patchissue-tracking
https://github.com/langchain-ai/langgraph/ product

Affected products

langgraph

==1.2.3
==1.2.4
==1.2.2
==1.2.1
==1.2.0

Matching in nixpkgs

pkgs.langgraph-cli

Official CLI for LangGraph API

nixos-unstable 0.4.26
- nixpkgs-unstable 0.4.30
- nixos-unstable-small 0.4.30
nixos-26.05 0.4.26
- nixos-26.05-small 0.4.26
- nixpkgs-26.05-darwin 0.4.26

pkgs.python313Packages.langgraph

Build resilient language agents as graphs

nixos-unstable 1.1.10
- nixpkgs-unstable 1.2.5
- nixos-unstable-small 1.2.5
nixos-26.05 1.1.10
- nixos-26.05-small 1.1.10
- nixpkgs-26.05-darwin 1.1.10

pkgs.python314Packages.langgraph

Build resilient language agents as graphs

nixos-unstable 1.1.10
- nixpkgs-unstable 1.2.5
- nixos-unstable-small 1.2.5
nixos-26.05 1.1.10
- nixos-26.05-small 1.1.10
- nixpkgs-26.05-darwin 1.1.10

pkgs.python313Packages.langgraph-cli

Official CLI for LangGraph API

nixos-unstable 0.4.26
- nixpkgs-unstable 0.4.30
- nixos-unstable-small 0.4.30
nixos-26.05 0.4.26
- nixos-26.05-small 0.4.26
- nixpkgs-26.05-darwin 0.4.26

pkgs.python313Packages.langgraph-sdk

SDK for interacting with the LangGraph Cloud REST API

nixos-unstable 0.3.15
- nixpkgs-unstable 0.4.2
- nixos-unstable-small 0.4.2
nixos-26.05 0.3.14
- nixos-26.05-small 0.3.14
- nixpkgs-26.05-darwin 0.3.14

pkgs.python314Packages.langgraph-cli

Official CLI for LangGraph API

nixos-unstable 0.4.26
- nixpkgs-unstable 0.4.30
- nixos-unstable-small 0.4.30
nixos-26.05 0.4.26
- nixos-26.05-small 0.4.26
- nixpkgs-26.05-darwin 0.4.26

pkgs.python314Packages.langgraph-sdk

SDK for interacting with the LangGraph Cloud REST API

nixos-unstable 0.3.15
- nixpkgs-unstable 0.4.2
- nixos-unstable-small 0.4.2
nixos-26.05 0.3.14
- nixos-26.05-small 0.3.14
- nixpkgs-26.05-darwin 0.3.14

pkgs.python313Packages.langgraph-prebuilt

Prebuilt agents add-on for Langgraph. Should always be bundled with langgraph

nixos-unstable 1.0.12
- nixpkgs-unstable 1.1.0
- nixos-unstable-small 1.1.0
nixos-26.05 1.0.12
- nixos-26.05-small 1.0.12
- nixpkgs-26.05-darwin 1.0.12

pkgs.python314Packages.langgraph-prebuilt

Prebuilt agents add-on for Langgraph. Should always be bundled with langgraph

nixos-unstable 1.0.12
- nixpkgs-unstable 1.1.0
- nixos-unstable-small 1.1.0
nixos-26.05 1.0.12
- nixos-26.05-small 1.0.12
- nixpkgs-26.05-darwin 1.0.12

pkgs.python313Packages.langgraph-checkpoint

Library with base interfaces for LangGraph checkpoint savers

nixos-unstable 4.1.1
- nixpkgs-unstable 4.1.1
- nixos-unstable-small 4.1.1
nixos-26.05 4.1.1
- nixos-26.05-small 4.1.1
- nixpkgs-26.05-darwin 4.1.1

pkgs.python314Packages.langgraph-checkpoint

Library with base interfaces for LangGraph checkpoint savers

nixos-unstable 4.1.1
- nixpkgs-unstable 4.1.1
- nixos-unstable-small 4.1.1
nixos-26.05 4.1.1
- nixos-26.05-small 4.1.1
- nixpkgs-26.05-darwin 4.1.1

pkgs.python313Packages.langgraph-runtime-inmem

Inmem implementation for the LangGraph API server

nixos-unstable 0.29.0
- nixpkgs-unstable 0.30.0
- nixos-unstable-small 0.30.0
nixos-26.05 0.28.1
- nixos-26.05-small 0.28.1
- nixpkgs-26.05-darwin 0.28.1

pkgs.python313Packages.langgraph-store-mongodb

Integrations between MongoDB, Atlas, LangChain, and LangGraph

nixos-unstable 0.3.0
- nixpkgs-unstable 0.3.0
- nixos-unstable-small 0.3.0
nixos-26.05 0.3.0
- nixos-26.05-small 0.3.0
- nixpkgs-26.05-darwin 0.3.0

pkgs.python314Packages.langgraph-runtime-inmem

Inmem implementation for the LangGraph API server

nixos-unstable 0.29.0
- nixpkgs-unstable 0.30.0
- nixos-unstable-small 0.30.0
nixos-26.05 0.28.1
- nixos-26.05-small 0.28.1
- nixpkgs-26.05-darwin 0.28.1

pkgs.python314Packages.langgraph-store-mongodb

Integrations between MongoDB, Atlas, LangChain, and LangGraph

nixos-unstable 0.3.0
- nixpkgs-unstable 0.3.0
- nixos-unstable-small 0.3.0
nixos-26.05 0.3.0
- nixos-26.05-small 0.3.0
- nixpkgs-26.05-darwin 0.3.0

pkgs.python313Packages.langgraph-checkpoint-sqlite

Library with a SQLite implementation of LangGraph checkpoint saver

nixos-unstable 3.0.3
- nixpkgs-unstable 3.1.0
- nixos-unstable-small 3.1.0
nixos-26.05 3.0.3
- nixos-26.05-small 3.0.3
- nixpkgs-26.05-darwin 3.0.3

pkgs.python314Packages.langgraph-checkpoint-sqlite

Library with a SQLite implementation of LangGraph checkpoint saver

nixos-unstable 3.0.3
- nixpkgs-unstable 3.1.0
- nixos-unstable-small 3.1.0
nixos-26.05 3.0.3
- nixos-26.05-small 3.0.3
- nixpkgs-26.05-darwin 3.0.3

pkgs.python313Packages.langgraph-checkpoint-mongodb

Integrations between MongoDB, Atlas, LangChain, and LangGraph

nixos-unstable 0.4.0
- nixpkgs-unstable 0.4.0
- nixos-unstable-small 0.4.0
nixos-26.05 0.4.0
- nixos-26.05-small 0.4.0
- nixpkgs-26.05-darwin 0.4.0

pkgs.python314Packages.langgraph-checkpoint-mongodb

Integrations between MongoDB, Atlas, LangChain, and LangGraph

nixos-unstable 0.4.0
- nixpkgs-unstable 0.4.0
- nixos-unstable-small 0.4.0
nixos-26.05 0.4.0
- nixos-26.05-small 0.4.0
- nixpkgs-26.05-darwin 0.4.0

pkgs.python313Packages.langgraph-checkpoint-postgres

Library with a Postgres implementation of LangGraph checkpoint saver

nixos-unstable 3.0.5
- nixpkgs-unstable 3.1.0
- nixos-unstable-small 3.1.0
nixos-26.05 3.0.5
- nixos-26.05-small 3.0.5
- nixpkgs-26.05-darwin 3.0.5

pkgs.python314Packages.langgraph-checkpoint-postgres

Library with a Postgres implementation of LangGraph checkpoint saver

nixos-unstable 3.0.5
- nixpkgs-unstable 3.1.0
- nixos-unstable-small 3.1.0
nixos-26.05 3.0.5
- nixos-26.05-small 3.0.5
- nixpkgs-26.05-darwin 3.0.5

Package maintainers

@sarahec Sarah Clark <seclark@nextquestion.net>

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