Vulnerability · Published Sep 26, 2026 · Assigned by VulnCheck
CVE-2026-100563OpenClaw before 2026.8.1 CSV Formula Injection via Session Labels
Medium 5.4
In plain English
A medium-severity security flaw in OpenClaw from OpenClaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Official 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.
Affected products (as reported)
Weakness: CWE-1236 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
References
- GitHub Security Advisory (GHSA-xx9p-hc9w-6p5h) vendor-advisory
- VulnCheck Advisory: OpenClaw before 2026.8.1 CSV Formula Injection via Session Labels third-party-advisory