SSRF (Server-Side Request Forgery) in github.com/nezhahq/nezha (CVE-2026-47268)
Summary
SSRF in github.com/nezhahq/nezha (CVE-2026-47268). Risk of unauthorized operations or information disclosure. Exploitable via GET /api/v1/ddns. Mitigation: upgrade to 2.0.10 or later.
Original description
The description as published by the source.
Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 0.20.0 to before version 2.0.10, an authenticated Nezha dashboard user can create or update a DDNS profile with provider webhook and configure an arbitrary webhook_url, HTTP method, request body, and headers. When DDNS is triggered for a server that uses that profile, the dashboard process sends the configured request with utils.HttpClient without the SSRF protections used by notification webhooks. This allows a low-privileged authenticated user who controls an owned server/DDNS profile to make the dashboard host issue HTTP requests to loopback or internal network services. The response body is not returned to the attacker in the confirmed path, so this is a blind SSRF / internal state-changing request primitive. This issue has been patched in version 2.0.10.
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-2026-47268 has been found in github.com/nezhahq/nezha.
Attackers can target a specific entry point like GET /api/v1/ddns over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 6.4/10.
What to do: upgrade github.com/nezhahq/nezha to 2.0.10 or later.
If unsure, ask your IT team or search "github.com/nezhahq/nezha CVE-2026-47268" on the vendor's site.
CVE-2026-47268 (github.com/nezhahq/nezha) — CWE-918 / CVSS v3 6.4
Attack vector: remote (network-reachable) / no user interaction
Attack surface: GET /api/v1/ddns / POST /api/v1/ddns / PATCH /api/v1/ddns/ / POST /internal
Patched: 2.0.10 — 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.
SSRF (CWE-918) exists in github.com/nezhahq/nezha. Attackers reach the vulnerable code path via GET /api/v1/ddns.
Check the vendor advisory for the affected versions of github.com/nezhahq/nezha. Attack surface: GET /api/v1/ddns / POST /api/v1/ddns / PATCH /api/v1/ddns/ / POST /internal.
Severity: Medium (CVSS 6.4/10). Risk of unauthorized operations or information disclosure.
Update to 2.0.10.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual GET /api/v1/ddns requests with malformed payloads or SQL meta-characters. Run grep -r 'github.com/nezhahq/nezha' . 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
-
1Identify exposure identify
grep -r 'github.com/nezhahq/nezha' . | 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/nezhahq/nezhaを grep し、稼働しているサービス・バージョンを把握する。 -
2Hunt for indicators of compromise detect
grep 'GET /api/v1/ddns' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで
GET /api/v1/ddnsへの異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。 -
3Apply patch patch
Upgrade github.com/nezhahq/nezha to 2.0.10ステージング環境で 2.0.10 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と、Step 2 で見つけた異常検知の続報チェックを含めること。
-
4Post-deployment verification verify
Replay attack against GET /api/v1/ddns on staging to confirm patch closes the vector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 Step 2 と同じログクエリ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
- package github.com
- web github.com