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CVE-2026-100563 medium CVSS 5.4

Vulnerability in OpenClaw (CVE-2026-100563)

Summary

Vulnerability in OpenClaw (CVE-2026-100563). Risk of unauthorized operations or information disclosure. Exploitable via openclaw. Mitigation: upgrade to 2026.8.1 or later.

Original description

The description as published by the source.

OpenClaw (npm package openclaw) before 2026.8.1 does not neutralize leading characters that spreadsheet applications interpret as formulas when the Control UI exports session data to CSV. Although session labels were quoted as CSV text, a lower-trust participant who can influence a session label or the first user message can place a formula-like cell in the Usage export; if an operator opens that export in a spreadsheet application with formula evaluation enabled, the cell may be evaluated with the permissions of the spreadsheet user. OpenClaw itself does not evaluate the formula, and practical impact depends on the spreadsheet application's security settings. The issue is fixed in 2026.8.1.

Source: NIST National Vulnerability Database 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-2026-100563 has been found in OpenClaw.
Attackers can target a specific entry point like openclaw over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 5.4/10.
What to do: upgrade OpenClaw to 2026.8.1 or later.
If unsure, ask your IT team or search "OpenClaw CVE-2026-100563" on the vendor's site.

CVE-2026-100563 (OpenClaw) — CWE-1236 / CVSS v3 5.4
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: openclaw
Patched: 2026.8.1 — 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-1236) exists in OpenClaw. Attackers reach the vulnerable code path via openclaw without authentication.

📍 Affected scope

Check the vendor advisory for the affected versions of OpenClaw. Attack surface: openclaw.

🔥 Severity

Severity: Medium (CVSS 5.4/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 2026.8.1.

🛡️ 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 'OpenClaw' . 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

  1. 1
    Identify exposure identify 
    grep -r 'OpenClaw' . | 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 OpenClaw を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade OpenClaw to 2026.8.1

    ステージング環境で 2026.8.1 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を含めること。

  3. 3
    Post-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。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

References

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