CVE-2026-100563 OpenClaw before 2026.8.1 CSV Formula Injection via Session Labels
Attackers can inject malicious formulas into CSV exports via session labels, potentially executing code when operators open the file in spreadsheet software.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-100563?
CVE-2026-100563 is a medium-severity vulnerability in OpenClaw, published on 26 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Weakness: CWE-1236
Which versions are affected by CVE-2026-100563?
How do I fix CVE-2026-100563?
Upgrade to a fixed version.
Is CVE-2026-100563 being exploited?
There is no known exploitation of CVE-2026-100563 in the wild and no public exploit code.
Sources
Also known as GHSA-79w7-46j2-phwg, GHSA-xx9p-hc9w-6p5h, MINI-jxh5-7vmw-9fx6.