What is CVE-2026-85688?

CVE-2026-85688 is a critical-severity vulnerability, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-09-04.

How severe is CVE-2026-85688?

Critical severity. CVSS v3 base score is 9.8 out of 10.

CVE-2026-85688

CVE-2026-85688

TEN Framework 0.11.71 contains unauthenticated arbitrary file read and write vulnerabilities in the TMAN Designer file-content API endpoints. Attackers can submit POST and PUT requests to the /api/designer/v1/file-content endpoints to read arbitrary files or write malicious content to system paths, enabling code execution through authorized_keys, cron files, or executable graph files.

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

disclosure@vulncheck.com
disclosure@vulncheck.com
disclosure@vulncheck.com
disclosure@vulncheck.com

Frequently asked questions

What is CVE-2026-85688?: CVE-2026-85688 is a critical-severity vulnerability, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-09-04.
How severe is CVE-2026-85688?: Critical severity. CVSS v3 base score is 9.8 out of 10.