What is CVE-2026-85688?

CVE-2026-85688 is a critical-severity vulnerability in Ten-Framework, 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.

Auth bypass in Ten-Framework

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

Published 2026-09-04 · last modified 2026-09-24.

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.

EPSS exploit prediction

EPSS: 0.026 (85.4th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.026 · change: +0.012

Affected products

Ten-Framework

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

github.com/TEN-framework/ten-framework (product)
github.com/TEN-framework/ten-framework/blob/0.11.71/core/src/ten_manager/src/de… (technical-description)
github.com/TEN-framework/ten-framework/issues/2187 (issue-tracking)
www.vulncheck.com/advisories/ten-framework-0.11.71-unauthenticated-file-read-wr… (third-party-advisory)

Frequently asked questions

What is CVE-2026-85688?: CVE-2026-85688 is a critical-severity vulnerability in Ten-Framework, 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.