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CVE-2026-40262

Note Mark is an open-source note-taking application. In versions 0.19.1 and prior, the asset delivery handler serves uploaded files inline and relies on magic-byte detection for content type, which does not identify text-based formats such as HTML, SVG, or XHTML. These files are served with an empty Content-Type, no X-Content-Type-Options: nosniff header, and inline disposition, allowing browsers to sniff and render active content. An authenticated user can upload an HTML or SVG file containing
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8ec45dc9b9b0d6cdb5bd2ad58b7238cb3ceb69c652fe1731b12a0ebb08f3cac5
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-434","description":"CWE-434: Unrestricted Upload of File with Dangerous Type","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:16e9d7299dac4af3dc0d411d352de3eaee0267f513932dc8eba93243355b2bce · sha256:8a88a90fc9896b53… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:16e9d7299dac4af3dc0d411d352de3eaee0267f513932dc8eba93243355b2bce · sha256:8a88a90fc9896b53… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"note-mark","vendor":"enchant97","versions":[{"status":"affected","version":"< 0.19.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:16e9d7299dac4af3dc0d411d352de3eaee0267f513932dc8eba93243355b2bce · sha256:8a88a90fc9896b53… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:16e9d7299dac4af3dc0d411d352de3eaee0267f513932dc8eba93243355b2bce · sha256:8a88a90fc9896b53… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-434","description":"CWE-434: Unrestricted Upload of File with Dangerous Type","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:16e9d7299dac4af3dc0d411d352de3eaee0267f513932dc8eba93243355b2bce · sha256:8a88a90fc9896b53… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:16e9d7299dac4af3dc0d411d352de3eaee0267f513932dc8eba93243355b2bce · sha256:8a88a90fc9896b53… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/enchant97/note-mark/commit/6bb62842ccb956870b9bf183629eba95e326e5e3","tags":["x_refsource_MISC"],"url":"https://github.com/enchant97/note-mark/commit/6bb62842ccb956870b9bf183629eba95e326e5e3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:16e9d7299dac4af3dc0d411d352de3eaee0267f513932dc8eba93243355b2bce · sha256:8a88a90fc9896b53… · /containers/cna/references/1
{"name":"https://github.com/enchant97/note-mark/releases/tag/v0.19.2","tags":["x_refsource_MISC"],"url":"https://github.com/enchant97/note-mark/releases/tag/v0.19.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:16e9d7299dac4af3dc0d411d352de3eaee0267f513932dc8eba93243355b2bce · sha256:8a88a90fc9896b53… · /containers/cna/references/2
{"name":"https://github.com/enchant97/note-mark/security/advisories/GHSA-9pr4-rf97-79qh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/enchant97/note-mark/security/advisories/GHSA-9pr4-rf97-79qh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:16e9d7299dac4af3dc0d411d352de3eaee0267f513932dc8eba93243355b2bce · sha256:8a88a90fc9896b53… · /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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