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CVE-2026-67435— linuxfabrik-lib: fetch() forwards credential headers across a cross-origin redirect

Quick assessment

Affected
Linuxfabrik monitoring-plugins
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.

Linuxfabrik Linuxfabrik Monitoring Plugins是Linuxfabrik组织开源的一系列监控插件软件。 Linuxfabrik monitoring-plugins 6.0.0之前版本存在安全漏洞，该漏洞源于lib.url.fetch()跟随跨源重定向时转发凭证头，可能导致信息泄露和服务端请求伪造。

CVSS 6.0 · Medium EPSS 0.50% · P40

Possible ATT&CK Techniques 1 AI

T1592 · Gather Victim Host Information

Affected Version Matrix 1

VendorProduct Version RangeStatus
Linuxfabrik monitoring-plugins < 6.0.0 affected
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I. Basic Information for CVE-2026-67435

Vulnerability Information
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Vulnerability Title
linuxfabrik-lib: fetch() forwards credential headers across a cross-origin redirect
Source: CVE Program / CVE List V5
Vulnerability Description
linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations. Prior to version 6.0.0, lib.url.fetch() followed cross-origin redirects while forwarding caller-supplied credential headers other than Authorization and Cookie, allowing a malicious redirect-capable server to receive headers such as X-Auth-Token from authenticated monitoring requests. This issue is fixed in version 6.0.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Linuxfabrik monitoring-plugins 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linuxfabrik Linuxfabrik Monitoring Plugins是Linuxfabrik组织开源的一系列监控插件软件。 Linuxfabrik monitoring-plugins 6.0.0之前版本存在安全漏洞，该漏洞源于lib.url.fetch()跟随跨源重定向时转发凭证头，可能导致信息泄露和服务端请求伪造。
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
Linuxfabrik monitoring-plugins < 6.0.0 -

II. Public POCs for CVE-2026-67435

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III. Intelligence Information for CVE-2026-67435

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Patches & Fixes for CVE-2026-67435 (1)

Vendor Advisories for CVE-2026-67435 (1)

Other References for CVE-2026-67435 (1)

Same Patch Batch · Linuxfabrik · 2026-07-29 · 3 CVEs total

CVE-2026-67436 8.3 HIGH Linuxfabrik monitoring-plugins: SSRF and auth-token disclosure via unvalidated @odata.id l
CVE-2026-67433 5.8 MEDIUM Linuxfabrik monitoring-plugins: Symlink following in logfile legacy database migration

IV. Related Vulnerabilities

Same product: monitoring-plugins
Same vendor: Linuxfabrik
Same weakness: CWE-200

V. Comments for CVE-2026-67435

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