CVE-2026-100563
Received Received - Intake

CSV Formula Injection in OpenClaw Session Export

Publication date: 2026-09-26

Last updated on: 2026-09-26

Assigner: VulnCheck

Description
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.

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Meta Information

Published
2026-09-26
Last Modified
2026-09-26
Generated
2026-09-26
AI Q&A
2026-09-26
EPSS Evaluated
N/A
NVD
CVE-2026-100563
EUVD
EUVD-2026-87487

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-1236 The product saves user-provided information into a Comma-Separated Value (CSV) file, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as a command when the file is opened by a spreadsheet product.

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Executive Summary

OpenClaw before version 2026.8.1 has a vulnerability where session data exported to CSV is not properly neutralized for leading characters that spreadsheet applications interpret as formulas. Attackers can insert formula-like cells into the export by influencing session labels or the first user message. When opened in a spreadsheet with formula evaluation enabled, these cells may execute with the spreadsheet user's permissions.

Detection Guidance

Check if your OpenClaw version is below 2026.8.1 by running: npm list openclaw. Inspect CSV exports for formula-like entries in session labels or first messages. Open exports in a spreadsheet with formula evaluation disabled to test.

Impact Analysis

If you use OpenClaw versions before 2026.8.1 and export session data to CSV, an attacker could trick you into opening a malicious CSV file. If your spreadsheet application evaluates formulas automatically, the attacker's formula could run with your permissions, potentially accessing or modifying data in the spreadsheet.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by exposing sensitive data through formula injection in CSV exports. If an attacker inserts a malicious formula into session labels or messages, and a user opens the CSV in a spreadsheet with formula evaluation enabled, the formula may execute with the user's permissions. This could lead to unauthorized data access or manipulation, violating confidentiality requirements under GDPR and HIPAA.

Mitigation Strategies

Upgrade OpenClaw to version 2026.8.1 or later immediately. If upgrading is not possible, inspect all CSV exports for suspicious formula-like entries before opening them in spreadsheets with formula evaluation enabled.

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