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CVE-2026-25681
medium
CVSS 6.1
Vulnerability in golang.org/x/net (CVE-2026-25681)
Summary
vulnerability in golang.org/x/net (CVE-2026-25681). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `0.55.0` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-25681** has been found in golang.org/x/net.
Risk of unauthorized operations or information disclosure. CVSS score: 6.1/10.
What to do: upgrade golang.org/x/net to **0.55.0** or later.
If unsure, ask your IT team or search "golang.org/x/net CVE-2026-25681" on the vendor's site.
CVE-2026-25681 (golang.org/x/net) — CWE-1021 / CVSS v3 6.1
Attack vector: remote (network-reachable) / unauthenticated
Patched: `0.55.0` — 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.
❓ What is the problem
**A vulnerability** (CWE-1021) exists in golang.org/x/net.
📍 Affected scope
golang.org/x/net — .
🔥 Severity
Severity: Medium (CVSS 6.1/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **0.55.0**.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'golang.org/x/net' .` 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 'golang.org/x/net' . | 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 `golang.org/x/net` 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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6Apply patch patch
Upgrade golang.org/x/net to 0.55.0ステージング環境で 0.55.0 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
Go
golang.org/x/net
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.55.0"}]}]