CVE-2026-59155Public exploitNetwork attack vector

Credential exposure via unredacted list responses

Published Jul 10, 2026 · Updated Jul 10, 2026

Sensitive information exposure in Nezha Monitoring before 2.2.5 allows remote authenticated users to read third-party API credentials. The listDDNS and listNotification handlers copy full stored objects into API responses without redacting access secrets, webhook URLs, request headers, or bodies. An administrator session or PAT with the relevant read scope is required, and one request can disclose every stored integration credential visible to that principal.

CVSS severity6.9
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive information exposure in Nezha Monitoring before 2.2.5 allows remote authenticated users to read third-party API credentials. The listDDNS and listNotification handlers copy full stored objects into API responses without redacting access secrets, webhook URLs, request headers, or bodies. An administrator session or PAT with the relevant read scope is required, and one request can disclose every stored integration credential visible to that principal.

The record

CVE
CVE-2026-59155
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
NezhaHQ
Product
Nezha Monitoring
Classifications
CWE-200, T1528
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NezhaHQ · Nezha Monitoringversion=< 2.2.5

Published CVSS scores

6.9GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1528Steal Application Access Token

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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