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CVE-2026-47184
medium
CVSS 6.5
Vulnerability in zeroconf (CVE-2026-47184)
Summary
vulnerability in zeroconf (CVE-2026-47184). Risk of unauthorized operations or information disclosure. Exploitable via ``DNSCache._async_add``. Mitigation: upgrade to `0.149.7` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-47184** has been found in zeroconf.
Attackers can target a specific entry point like ``DNSCache._async_add`` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 6.5/10.
What to do: upgrade zeroconf to **0.149.7** or later.
If unsure, ask your IT team or search "zeroconf CVE-2026-47184" on the vendor's site.
CVE-2026-47184 (zeroconf) — CWE-770 / CVSS v3 6.5
Attack vector: adjacent-network / unauthenticated / no user interaction
Attack surface: `DNSCache._async_add` / `cache` / `_expirations` / `_expire_heap`
Patched: `0.149.7` — apply immediately
Workaround: There is no in-process workaround; upgrading is the fix.
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.
❓ What is the problem
**A vulnerability** (CWE-770) exists in zeroconf. Attackers reach the vulnerable code path via ``DNSCache._async_add`` without authentication.
📍 Affected scope
zeroconf — . Attack surface: `DNSCache._async_add` / `cache` / `_expirations` / `_expire_heap`.
🔥 Severity
Severity: Medium (CVSS 6.5/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **0.149.7**.
🛡️ Workaround
Workaround: There is no in-process workaround; upgrading is the fix.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'zeroconf' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'zeroconf' . | 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 `zeroconf` を grep し、稼働しているサービス・バージョンを把握する。
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5Apply temporary workaround mitigate
There is no in-process workaround; upgrading is the fix.パッチが適用されるまでの応急処置として、There is no in-process workaround; upgrading is the fix. を実施。回避策の副作用 (機能低下) を確認した上で。
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6Apply patch patch
Upgrade zeroconf to 0.149.7ステージング環境で 0.149.7 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 3 で見つけた異常検知の続報チェックを含めること。
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7Post-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 Step 3 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
pip
zeroconf
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.149.7"}]}]
PyPI
zeroconf
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.149.7"}]}]
References
- package https://github.com/python-zeroconf/python-zeroconf
- patch [email protected]
- patch [email protected]
- patch [email protected]
- patch [email protected]
- web https://github.com/advisories/GHSA-rfg2-pjw2-56x2
- web [email protected]