What is CVE-2026-101086?

CVE-2026-101086 is a medium-severity vulnerability in Nezhahq Nezha, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2026-09-27.

How severe is CVE-2026-101086?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Privilege escalation in Nezhahq Nezha

CVE-2026-101086

Nezha Dashboard versions before 2.3.5 fail to restrict service monitor task types to supported probe types, allowing authenticated users with nezha:service:write scope to submit privileged task types through the service API. Attackers can deliver command execution or Agent configuration tasks to Agents within their authorization scope by exploiting the shared protobuf Task.Type namespace between service monitors and privileged operations.

Vulnerability class: Privilege Escalation

Published 2026-09-27.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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

Nezhahq Nezha

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

github.com/nezhahq/nezha/security/advisories/GHSA-grrw-fx36-fv32 (vendor-advisory)
github.com/nezhahq/nezha/commit/38824dbc11a63964c5b9296ae4c68e62b34fa04b (patch)
www.vulncheck.com/advisories/nezha-dashboard-before-2.3.5-task-type-validation-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-101086?: CVE-2026-101086 is a medium-severity vulnerability in Nezhahq Nezha, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2026-09-27.
How severe is CVE-2026-101086?: Medium severity. CVSS v3 base score is 6.5 out of 10.