CVE•Published 2026-09-04•Modified 2026-09-14•1 article on news•4 live references•NVD data
CVE-2026-85661
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
37
Exploit Prediction Scoring System · top 63% of all CVEs
Weaknesses (CWE)
Description
excel-mcp-server 0.1.8 fails to enforce path confinement in stdio mode when EXCEL_FILES_PATH is unset, allowing attackers to read and write arbitrary files. Attackers can supply unchecked file paths to read and write tools to access any file accessible to the process.
Timeline
Published 2026-09-04
Modified 2026-09-14
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-85661Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-85661Censys host search filtered to this CVE id.
grep.app
CVE-2026-85661Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-85661GitHub code search for direct mentions.
Google dork
"CVE-2026-85661" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-85661 on GitHub.