CVE-2023-39955

Summary

Notes is a note-taking app for Nextcloud, an open-source cloud platform. Starting in version 4.4.0 and prior to version 4.8.0, when creating a note file with HTML, the content is rendered in the preview instead of the file being offered to download. Nextcloud Notes app version 4.8.0 contains a patch for the issue. No known workarounds are available.

Affected Software

Weaknesses

• CWE-79: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6g88-37x7-4vw6
• https://github.com/nextcloud/notes/pull/1031
• https://hackerone.com/reports/1924355

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6g88-37x7-4vw6
• https://github.com/nextcloud/notes/pull/1031
• https://hackerone.com/reports/1924355

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