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CVE-2026-2808— Consul vulnerable to arbitrary file reads through the vault kubernetes authentication provider

Quick assessment

Affected
HashiCorp Consul
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

HashiCorp Consul和HashiCorp Consul Enterprise都是美国HashiCorp公司的产品。HashiCorp Consul是一套分布式、高可用数据中心感知解决方案。该产品用于跨动态分布式基础架构连接和配置应用程序。HashiCorp Consul Enterprise是一个系统服务发现和配置管理工具。 HashiCorp Consul和HashiCorp Consul Enterprise 1.18.20至1.21.10版本和1.22.4版本存在安全漏洞，该漏洞源于配置

CVSS 6.8 · Medium EPSS 0.57% · P45

Possible ATT&CK Techniques 1 AI

T1552.005 · Cloud Instance Metadata API
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I. Basic Information for CVE-2026-2808

Vulnerability Information
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Vulnerability Title
Consul vulnerable to arbitrary file reads through the vault kubernetes authentication provider
Source: CVE Program / CVE List V5
Vulnerability Description
HashiCorp Consul and Consul Enterprise 1.18.20 up to 1.21.10 and 1.22.4 are vulnerable to arbitrary file read when configured with Kubernetes authentication. This vulnerability, CVE-2026-2808, is fixed in Consul 1.18.21, 1.21.11 and 1.22.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
HashiCorp Consul和HashiCorp Consul Enterprise 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HashiCorp Consul和HashiCorp Consul Enterprise都是美国HashiCorp公司的产品。HashiCorp Consul是一套分布式、高可用数据中心感知解决方案。该产品用于跨动态分布式基础架构连接和配置应用程序。HashiCorp Consul Enterprise是一个系统服务发现和配置管理工具。 HashiCorp Consul和HashiCorp Consul Enterprise 1.18.20至1.21.10版本和1.22.4版本存在安全漏洞，该漏洞源于配置
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
HashiCorp Consul 0 ~ 1.22.5 -
HashiCorp Consul Enterprise 0 ~ 1.22.5 -

II. Public POCs for CVE-2026-2808

# POC Description Source Link Shenlong Link
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default-local-qwen3.6 · 11974 chars
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III. Intelligence Information for CVE-2026-2808

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Vendor Advisories for CVE-2026-2808 (1)

IV. Related Vulnerabilities

Same product: Consul
Same vendor: HashiCorp
Same weakness: CWE-59

V. Comments for CVE-2026-2808

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