Riskcovery

CVE-2026-45159

Nextcloud: Files drop share links for end-to-end encrypted folders allowed to drop files into other folders of the share owner

State
Published
Severity
3.5 Low
Published
Jun 1, 2026
Updated
Jun 1, 2026
Reserved
May 8, 2026

Read the record on cve.org

Description

Nextcloud is an open source content collaboration platform. From versions 1.15.0 to before 1.15.4, 1.16.0 to before 1.16.3, 1.17.0 to before 1.17.1, and 1.18.0 to before 1.18.1, a malicious user with access to an end-to-end encrypted files drop link was able to also drop files into other end-to-end encrypted folders of the share owner. Reading and modifying of other files was not possible. This issue has been patched in versions 1.15.4, 1.16.3, 1.17.1, 1.18.1, and 2.0.0-rc.7.

Scores

CVSSScoreVectorSource
3.13.5 LowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:NGitHub_M

Weaknesses

  • CWE-639 Authorization Bypass Through User-Controlled Key

Affected Products

ProductVersions
security-advisoriesnextcloud
  • >= 1.15.0, < 1.15.4Affected
  • >= 1.16.0, < 1.16.3Affected
  • >= 1.17.0, < 1.17.1Affected
  • >= 1.18.0, < 1.18.1Affected

References

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