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CVE-2026-105799— LangChain: RediSearch Filter Injection via Unescaped Tag/Text Values

Quick assessment

Affected
langchain-ai langchainjs
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LangChain 是一个用于构建大语言模型（LLM）驱动应用程序的框架。在版本 1.1.1 之前，@langchain/redis 组件在处理结构化 RediSearch 的 TAG 过滤器和结构化 RediSearch 的 TEXT 过滤器时，未能对用户可控的值进行转义，导致攻击者可以注入 RediSearch 语法，从而修改或扩大生成的搜索查询范围。当应用程序将攻击者可影响的过滤器用作租户或文档访问边界时，被篡改的查询可能会泄露超出攻击者预期范围的索引文档。此问题已在版本 1.1.1 中得到修复。

CVSS 2.3 · Low EPSS 0.28% · P19

Affected Version Matrix 2

VendorProduct Version RangeStatus
@langchain redis < 1.1.1 affected
langchain-ai langchainjs < 1.1.1 affected
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I. Basic Information for CVE-2026-105799

Vulnerability Information
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Vulnerability Title
LangChain: RediSearch Filter Injection via Unescaped Tag/Text Values
Source: CVE Program / CVE List V5
Vulnerability Description
LangChain is a framework for building LLM-powered applications. Prior to 1.1.1, @langchain/redis does not escape attacker-controlled values in structured RediSearch TAG filters and structured RediSearch TEXT filters, allowing injected RediSearch syntax to alter or broaden the generated search query. When an application uses an attacker-influenceable filter as a tenant or document-access boundary, the modified query can expose indexed documents outside the attacker's intended scope. This issue is fixed in version 1.1.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
数据查询逻辑中特殊元素的不当中和
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
langchain-ai langchainjs < 1.1.1 -
@langchain redis < 1.1.1 -

II. Public POCs for CVE-2026-105799

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III. Intelligence Information for CVE-2026-105799

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Patches & Fixes for CVE-2026-105799 (2)

Vendor Advisories for CVE-2026-105799 (1)

Vendor Pages for CVE-2026-105799 (1)

IV. Related Vulnerabilities

Same product: langchainjs
Same vendor: langchain-ai
Same weakness: CWE-943

V. Comments for CVE-2026-105799

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