Code Injection in github.com/juev/nebula-mesh (CVE-2026-47722)
Summary
Code injection in github.com/juev/nebula-mesh (CVE-2026-47722). Risk of unauthorized operations or information disclosure. Exploitable via ListenHost. Mitigation: upgrade to 0.3.2 or later.
Original description
The description as published by the source.
nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.2, internal/configgen/generator.go:86,108,119 interpolates the operator-supplied ListenHost and TunDevice fields raw into a text/template that produces the agent's config.yml. internal/web/advanced.go:20-35 accepts both with only strings.TrimSpace — no character or shape validation. Version 0.3.2 fixes the issue.
Source: GitHub Security Advisories (Global) 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-2026-47722 has been found in github.com/juev/nebula-mesh.
Attackers can target a specific entry point like ListenHost over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade github.com/juev/nebula-mesh to 0.3.2 or later.
If unsure, ask your IT team or search "github.com/juev/nebula-mesh CVE-2026-47722" on the vendor's site.
CVE-2026-47722 (github.com/juev/nebula-mesh) — CWE-94
Attack surface: ListenHost / TunDevice / strings.TrimSpace / adv_tun_device
Patched: 0.3.2 — 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.
Arbitrary code execution (CWE-94) exists in github.com/juev/nebula-mesh. Attackers reach the vulnerable code path via ListenHost.
Check the vendor advisory for the affected versions of github.com/juev/nebula-mesh. Attack surface: ListenHost / TunDevice / strings.TrimSpace / adv_tun_device.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 0.3.2.
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 'github.com/juev/nebula-mesh' . 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 'github.com/juev/nebula-mesh' . | 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
github.com/juev/nebula-mesh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 github.com/juev/nebula-mesh to 0.3.2ステージング環境で 0.3.2 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。
-
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 github.com
- advisory nvd.nist.gov
- package github.com
- patch github.com
- report github.com
- web github.com
- web github.com