PT-2026-21300 · Langchain · @Langchain/Langgraph-Checkpoint-Redis

Yardenporat353 · Published 2026-02-18 · Updated 2026-03-19 · CVE-2026-27022

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions @langchain/langgraph-checkpoint-redis versions prior to 1.0.2

Description A query injection issue exists in the RedisSaver and ShallowRedisSaver classes of the @langchain/langgraph-checkpoint-redis package. These classes build RediSearch queries by directly incorporating user-supplied filter keys and values without sufficient sanitization. RediSearch utilizes special characters that can alter query behavior. When user-controlled data includes these characters, the query logic can be manipulated, potentially bypassing intended access controls. The vulnerability occurs due to the direct interpolation of user-provided filter keys and values into RediSearch queries without proper escaping.

Recommendations Update to version 1.0.2 or later.

Exploit

Fix

Special Elements Injection

Weakness Enumeration

CWE-74

Related Identifiers

CVE-2026-27022

GHSA-5MX2-W598-339M

Affected Products

@Langchain/Langgraph-Checkpoint-Redis

References · 14

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27022.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-27022 · Security Note
• https://osv.dev/vulnerability/CVE-2026-27022 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-5mx2-w598-339m · Vendor Advisory
• https://github.com/langchain-ai/langgraphjs · Note
• https://github.com/langchain-ai/langgraphjs/pull/1943 · Note
• https://github.com/langchain-ai/langgraphjs/releases/tag/@langchain/langgraph-checkpoint-redis@1.0.2 · Note
• https://github.com/langchain-ai/langgraphjs/commit/814c76dc3938d0f6f7e17ca3bc11d6a12270b2a1 · Note
• https://github.com/langchain-ai/langgraphjs/security/advisories/GHSA-5mx2-w598-339m · Note
• https://raxe.ai/labs/advisories · Reddit Post
• https://reddit.com/r/LangChain/comments/1rycurg/psa_two_langgraph_checkpoint_vulnerabilities · Reddit Post
• https://twitter.com/CVEnew/status/2024988754650530067 · Twitter Post
• https://twitter.com/CyberAmyntas/status/2031502628228943994 · Twitter Post
• https://t.me/cveNotify/152672 · Telegram Post