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CVE-2026-59155

Nezha Monitoring: DDNS and Notification credential exposure via unredacted list API

MEDIUM
6.9
CVSS Score
Published: July 10, 2026 at 09:31 PM UTC
Updated: October 25, 2026 at 03:10 PM UTC
1 product affected across 1 vendorNezha

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Severity
MEDIUM6.9
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. Prior to 2.2.5, the GET /api/v1/ddns and GET /api/v1/notification endpoints return full resource objects including plaintext third-party API credentials, including Cloudflare API tokens, TencentCloud SecretKeys, Slack, Discord, and Telegram webhook URLs with embedded bot tokens, and Authorization header values, without any field-level redaction. Any authenticated admin or PAT with nezha:ddns:read or nezha:notification:read scope can receive stored credentials through the listDDNS and listNotification handlers in a single API response. This issue is fixed in version 2.2.5.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Nezha· Nezhahq
90%
v < 2.2.5
Affected range stops below 2.2.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

x_refsource_CONFIRM
Source: cverecord
https://github.com/nezhahq/nezha/security/advisories/GHSA-ww5p-j6cj-6mqq
x_refsource_MISC
Source: cverecord
https://github.com/nezhahq/nezha/commit/39d398066d8c644fe452f74704e34ada6c7ab61e
x_refsource_MISC
Source: cverecord
https://github.com/nezhahq/nezha/releases/tag/v2.2.5

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.9MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-200

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