CVE-2026-101085: Numeric Truncation Error in nezhahq nezha
Nezha before 2.3.8 fails to validate alert rule type and duration bounds, allowing authenticated non-administrator users to create malformed rules that trigger unrecovered panics in the alert evaluator goroutine. Attackers can submit a crafted alert rule via the POST /api/v1/alert-rule endpoint to crash the dashboard process, which persists the rule and causes repeated crashes on restart, disabling all monitoring and control plane functionality.
AI Analysis
Technical Summary
CVE-2026-101085 is a vulnerability in Nezha prior to version 2.3.8 where the software fails to properly validate alert rule type and duration bounds. Authenticated users with non-administrator privileges can exploit this by submitting a crafted alert rule via the POST /api/v1/alert-rule endpoint. This triggers unrecovered panics in the alert evaluator goroutine, crashing the dashboard process. Because the malformed rule is persisted, the dashboard repeatedly crashes on restart, effectively disabling monitoring and control plane functions.
Potential Impact
Exploitation results in denial of service by crashing the dashboard process repeatedly, which disables all monitoring and control plane functionality. This can disrupt operational visibility and control, potentially impacting incident response and system management.
Mitigation Recommendations
Upgrade Nezha to version 2.3.8 or later where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the provided data.
CVE-2026-101085: Numeric Truncation Error in nezhahq nezha
Description
Nezha before 2.3.8 fails to validate alert rule type and duration bounds, allowing authenticated non-administrator users to create malformed rules that trigger unrecovered panics in the alert evaluator goroutine. Attackers can submit a crafted alert rule via the POST /api/v1/alert-rule endpoint to crash the dashboard process, which persists the rule and causes repeated crashes on restart, disabling all monitoring and control plane functionality.
CVSS v4.0
Score 7.1high
Affected software
nezhahq
nezha
pkg:golang/github.com/nezhahq/nezhaRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-101085 is a vulnerability in Nezha prior to version 2.3.8 where the software fails to properly validate alert rule type and duration bounds. Authenticated users with non-administrator privileges can exploit this by submitting a crafted alert rule via the POST /api/v1/alert-rule endpoint. This triggers unrecovered panics in the alert evaluator goroutine, crashing the dashboard process. Because the malformed rule is persisted, the dashboard repeatedly crashes on restart, effectively disabling monitoring and control plane functions.
Potential Impact
Exploitation results in denial of service by crashing the dashboard process repeatedly, which disables all monitoring and control plane functionality. This can disrupt operational visibility and control, potentially impacting incident response and system management.
Mitigation Recommendations
Upgrade Nezha to version 2.3.8 or later where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the provided data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-27T20:29:07.432Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab98494f7a7c541067b976b
Added to database: 09/27/2026, 21:03:16 UTC
Last enriched: 09/27/2026, 21:17:49 UTC
Last updated: 09/28/2026, 01:57:30 UTC
Views: 7
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.