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CVE-2026-35037

Ech0 is an open-source, self-hosted publishing platform for personal idea sharing. Prior to 4.2.8, the GET /api/website/title endpoint accepts an arbitrary URL via the website_url query parameter and makes a server-side HTTP request to it without any validation of the target host or IP address. The endpoint requires no authentication. An attacker can use this to reach internal network services, cloud metadata endpoints (169.254.169.254), and localhost-bound services, with partial response data e
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8be58a4bed5f44b4011431837da7d5715f20883fa5229b4fe2a6498f564a3273
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"Ech0","vendor":"lin-snow","versions":[{"status":"affected","version":"< 4.2.8"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:900421adafbd3bbc317876be397add63109b4248f116fb24176d5819b6c8ed49 · sha256:a747aaf82e851f5a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:900421adafbd3bbc317876be397add63109b4248f116fb24176d5819b6c8ed49 · sha256:a747aaf82e851f5a… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:900421adafbd3bbc317876be397add63109b4248f116fb24176d5819b6c8ed49 · sha256:a747aaf82e851f5a… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/lin-snow/Ech0/security/advisories/GHSA-cqgf-f4x7-g6wc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/lin-snow/Ech0/security/advisories/GHSA-cqgf-f4x7-g6wc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:900421adafbd3bbc317876be397add63109b4248f116fb24176d5819b6c8ed49 · sha256:a747aaf82e851f5a… · /containers/cna/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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