nezhahq Nezha up to 2.3.7 Alert Evaluator /api/v1/alert-rule input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.47+

Summaryinfo

A vulnerability categorized as problematic has been discovered in nezhahq Nezha up to 2.3.7. This issue affects some unknown processing of the file /api/v1/alert-rule of the component Alert Evaluator. The manipulation results in input validation. This vulnerability is cataloged as CVE-2026-101085. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in nezhahq Nezha up to 2.3.7. It has been classified as problematic. Affected is an unknown functionality of the file /api/v1/alert-rule of the component Alert Evaluator. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-101085 since 09/27/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available.

Upgrading to version 2.3.8 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-88020). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Nezha 2.3.8

Timelineinfo

09/27/2026 Advisory disclosed
09/27/2026 +0 days CVE reserved
09/27/2026 +0 days VulDB entry created
09/28/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-101085 (🔒)
GCVE (CVE): GCVE-0-2026-101085
GCVE (VulDB): GCVE-100-410964
EUVD: 🔒

Entryinfo

Created: 09/27/2026 23:24
Updated: 09/28/2026 00:42
Changes: 09/27/2026 23:24 (77), 09/28/2026 00:42 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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