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CVE-2026-75130— Context7 2.1.2 Prompt Injection via Custom AI Instructions

Quick assessment

Affected
Uptash Context7
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.

Upstash Context7 Platform是Upstash组织的一个提供上下文信息整合与管理服务的平台。 Upstash Context7 Platform 存在提示词注入漏洞，可能导致攻击者利用漏洞破坏系统的机密性、完整性或可用性。

CVSS 9.0 · Critical EPSS 0.28% · P19

Affected Version Matrix 1

VendorProduct Version RangeStatus
Uptash Context7 ≤ 2.1.2 affected
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I. Basic Information for CVE-2026-75130

Vulnerability Information
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Vulnerability Title
Context7 2.1.2 Prompt Injection via Custom AI Instructions
Source: CVE Program / CVE List V5
Vulnerability Description
Context7 through 2.1.2 contains a prompt injection vulnerability that allows attackers to execute malicious instructions in connected AI coding agents by injecting unsanitized content through the Custom AI Instructions feature served via the MCP server. Attackers can poison the custom instructions to exfiltrate credentials from environment files to an attacker-controlled service and perform destructive file deletion on the victim's machine when the agent makes a routine library documentation request.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1427
Source: CVE Program / CVE List V5
Vulnerability Title
Upstash Context7 Platform 提示词注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Upstash Context7 Platform是Upstash组织的一个提供上下文信息整合与管理服务的平台。 Upstash Context7 Platform 存在提示词注入漏洞，可能导致攻击者利用漏洞破坏系统的机密性、完整性或可用性。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Uptash Context7 0 ~ 2.1.2 -

II. Public POCs for CVE-2026-75130

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III. Intelligence Information for CVE-2026-75130

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Vendor Advisories for CVE-2026-75130 (1)

Security Blog Posts for CVE-2026-75130 (2)

IV. Related Vulnerabilities

Same weakness: CWE-1427

V. Comments for CVE-2026-75130

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