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CVE-2026-44498
high
CVSS 7.5
Vulnerability in zebrad (CVE-2026-44498)
Summary
vulnerability in zebrad (CVE-2026-44498). Data can be tampered with by attackers. Exploitable via ``MAX_BLOCK_SIGOPS``. Mitigation: upgrade to `4.4.0` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-44498** has been found in zebrad.
Attackers can target a specific entry point like ``MAX_BLOCK_SIGOPS`` over the network to misuse the product.
Data can be tampered with by attackers. CVSS score: 7.5/10.
What to do: upgrade zebrad to **4.4.0** or later.
If unsure, ask your IT team or search "zebrad CVE-2026-44498" on the vendor's site.
CVE-2026-44498 (zebrad) — CWE-682 / CVSS v3 7.5
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: `MAX_BLOCK_SIGOPS` / `zcashd` / `scriptSig` / `Sigops`
Patched: `4.4.0` — apply immediately
Workaround: None.
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-682) exists in zebrad. Attackers reach the vulnerable code path via ``MAX_BLOCK_SIGOPS`` without authentication.
📍 Affected scope
zebrad — . Attack surface: `MAX_BLOCK_SIGOPS` / `zcashd` / `scriptSig` / `Sigops`.
🔥 Severity
Severity: High (CVSS 7.5/10). Data can be tampered with by attackers
🔧 How to fix
Update to **4.4.0**.
🛡️ Workaround
Workaround: None.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'zebrad' .` 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 'zebrad' . | 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 `zebrad` 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
None.パッチが適用されるまでの応急処置として、None. 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 zebrad to 4.4.0ステージング環境で 4.4.0 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
rust
zebrad
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.0"}]}]
crates.io
zebrad
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.4.0"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2026-44498
- package https://github.com/ZcashFoundation/zebra
- web https://github.com/ZcashFoundation/zebra/releases/tag/v4.4.0
- web https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-jv4h-j224-23cc
- web https://github.com/advisories/GHSA-jv4h-j224-23cc