CVE Explorer

CVE-2026-53523

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.0.0 to before version 2.2.0, the getRedirectURL function in oauth2.go:22-29 constructs the OAuth2 callback URL by concatenating the request's Host header with a fixed path, with zero validation of the Host header. This can result in host header injection. This issue has been patched in version 2.2.0.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7267a0546e5c5d7fe9dbb60b6dff2995128ac2efc34179cea90332a224a04cd1

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"nezha","vendor":"nezhahq","versions":[{"status":"affected","version":">= 1.0.0, < 2.2.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:51e078dd10b9b05101f0f33ec7286c58139dc4704d8c0ac32643c885551aa5a2 · sha256:cc4000c86d3ded64… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:51e078dd10b9b05101f0f33ec7286c58139dc4704d8c0ac32643c885551aa5a2 · sha256:cc4000c86d3ded64… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-601","description":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:51e078dd10b9b05101f0f33ec7286c58139dc4704d8c0ac32643c885551aa5a2 · sha256:cc4000c86d3ded64… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/nezhahq/nezha/security/advisories/GHSA-9rc6-8cjv-rcvx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nezhahq/nezha/security/advisories/GHSA-9rc6-8cjv-rcvx"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:51e078dd10b9b05101f0f33ec7286c58139dc4704d8c0ac32643c885551aa5a2 · sha256:cc4000c86d3ded64… · /containers/cna/references/0

{"tags":["exploit"],"url":"https://github.com/nezhahq/nezha/security/advisories/GHSA-9rc6-8cjv-rcvx"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:51e078dd10b9b05101f0f33ec7286c58139dc4704d8c0ac32643c885551aa5a2 · sha256:cc4000c86d3ded64… · /containers/adp/0/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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