Information Disclosure in linuxfabrik-lib (CVE-2026-67435)
Summary
Vulnerability in linuxfabrik-lib (CVE-2026-67435). Risk of unauthorized operations or information disclosure. Exploitable via Host header. Mitigation: upgrade to 6.0.0 or later.
Original description
The description as published by the source.
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: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-67435 has been found in linuxfabrik-lib.
Attackers can target a specific entry point like Host header over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade linuxfabrik-lib to 6.0.0 or later.
If unsure, ask your IT team or search "linuxfabrik-lib CVE-2026-67435" on the vendor's site.
CVE-2026-67435 (linuxfabrik-lib) — CWE-200
Attack surface: Host header / Authorization / Cookie / urllib
Patched: 6.0.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Information disclosure (CWE-200) exists in linuxfabrik-lib. Attackers reach the vulnerable code path via Host header.
Check the vendor advisory for the affected versions of linuxfabrik-lib. Attack surface: Host header / Authorization / Cookie / urllib.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 6.0.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'linuxfabrik-lib' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'linuxfabrik-lib' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
linuxfabrik-libを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade linuxfabrik-lib to 6.0.0ステージング環境で 6.0.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
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3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- advisory github.com
- package github.com
- package pypi.org
- patch github.com
- web github.com