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CVE-2026-53945

Ghost is a Node.js content management system. From 6.0.9 until 6.21.1, Ghost’s private-IP check for outbound HTTP requests could be bypassed via DNS rebinding, allowing an attacker to coerce the Ghost server into reaching hosts on internal networks through features that issue external fetches. This vulnerability is fixed in 6.21.1.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a3fa6e819347ab2de09b3e3588a5502657ae4d3a29b22938e7e891789c7ac5e7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1fbb51943b83fe2f2be698cb0c728d1f4157788485b72c2abccfdf5dda2d008d · sha256:2ceb746388eb8702… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1fbb51943b83fe2f2be698cb0c728d1f4157788485b72c2abccfdf5dda2d008d · sha256:2ceb746388eb8702… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"Ghost","vendor":"TryGhost","versions":[{"status":"affected","version":">= 6.0.9, < 6.21.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1fbb51943b83fe2f2be698cb0c728d1f4157788485b72c2abccfdf5dda2d008d · sha256:2ceb746388eb8702… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:1fbb51943b83fe2f2be698cb0c728d1f4157788485b72c2abccfdf5dda2d008d · sha256:2ceb746388eb8702… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1fbb51943b83fe2f2be698cb0c728d1f4157788485b72c2abccfdf5dda2d008d · sha256:2ceb746388eb8702… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:1fbb51943b83fe2f2be698cb0c728d1f4157788485b72c2abccfdf5dda2d008d · sha256:2ceb746388eb8702… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-ch52-px8q-f22j","tags":["x_refsource_CONFIRM"],"url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-ch52-px8q-f22j"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1fbb51943b83fe2f2be698cb0c728d1f4157788485b72c2abccfdf5dda2d008d · sha256:2ceb746388eb8702… · /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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