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CVE-2026-54775
medium
CVSS 6.5
Vulnerability in CoreWCF.Kafka (CVE-2026-54775)
Summary
vulnerability in CoreWCF.Kafka (CVE-2026-54775). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `1.9.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-54775** has been found in CoreWCF.Kafka.
Risk of unauthorized operations or information disclosure. CVSS score: 6.5/10.
What to do: upgrade CoreWCF.Kafka to **1.9.1** or later.
If unsure, ask your IT team or search "CoreWCF.Kafka CVE-2026-54775" on the vendor's site.
CVE-2026-54775 (CoreWCF.Kafka) — CWE-248 / CVSS v3 6.5
Attack vector: remote (network-reachable) / no user interaction
Patched: `1.9.1` — apply immediately
Workaround: Only allow authenticated writes to a topic
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-248) exists in CoreWCF.Kafka.
📍 Affected scope
CoreWCF.Kafka — .
🔥 Severity
Severity: Medium (CVSS 6.5/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **1.9.1**.
🛡️ Workaround
Workaround: Only allow authenticated writes to a topic
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'CoreWCF.Kafka' .` 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 'CoreWCF.Kafka' . | 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 `CoreWCF.Kafka` 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
Only allow authenticated writes to a topicパッチが適用されるまでの応急処置として、Only allow authenticated writes to a topic 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 CoreWCF.Kafka to 1.9.1ステージング環境で 1.9.1 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
nuget
CoreWCF.Kafka
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.1"}]}]