What is CVE-2026-100564?

CVE-2026-100564 is a medium-severity vulnerability in Openclaw, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 5.4/10. Published 2026-09-26.

How severe is CVE-2026-100564?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Openclaw

CVE-2026-100564

OpenClaw versions before 2026.8.1 fail to neutralize spreadsheet formula characters in participant display names within attendance CSV exports. Attackers can inject formula-like cells that execute with spreadsheet user permissions when the export is opened in formula-enabled applications.

Published 2026-09-26.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Openclaw

Weakness classification (CWE)

CWE-1236 — Improper Neutralization of Formula Elements in a CSV File

References

github.com/openclaw/openclaw/security/advisories/GHSA-39hf-qg99-f4qv (vendor-advisory)
www.vulncheck.com/advisories/openclaw-before-2026.8.1-csv-formula-injection-via… (third-party-advisory)

Frequently asked questions

What is CVE-2026-100564?: CVE-2026-100564 is a medium-severity vulnerability in Openclaw, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 5.4/10. Published 2026-09-26.
How severe is CVE-2026-100564?: Medium severity. CVSS v3 base score is 5.4 out of 10.