What’s Vulnerable › Vulnerabilities

CVE-2026-101086: Nezha Dashboard before 2.3.5 Task Type Validation Bypass

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-27 · updated 2026-09-28
• Weakness: CWE-269

Description

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.

Affected products

• nezhahq nezha: before 2.3.5 — fixed in 2.3.5

How to fix

Upgrade to a fixed version: nezhahq nezha 2.3.5. Check the vendor advisory for mitigations.

References

• https://github.com/nezhahq/nezha/commit/38824dbc11a63964c5b9296ae4c68e62b34fa04b
• https://github.com/nezhahq/nezha/security/advisories/GHSA-grrw-fx36-fv32
• https://www.vulncheck.com/advisories/nezha-dashboard-before-2.3.5-task-type-validation-bypass

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