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CVE-2026-45264

Nextcloud: ACL Rename Permission Bypass in Team Folders Allows Unauthorized File Renames PUBLISHED

Description (CNA)

Nextcloud is an open source content collaboration platform. From versions 17.0.0 to before 17.0.15, 18.0.0 to before 18.1.12, 19.0.0 to before 19.1.16, 20.0.0 to before 20.1.11, and 21.0.0 to before 21.0.4, a user with READ and CREATE permission, but no UPDATE permission for a team folder can rename files in the team folder. This issue has been patched in versions 17.0.15, 18.1.12, 19.1.16, 20.1.11, and 21.0.4.

Affected (CNA)

Vendor / productVersions
nextcloud / security-advisoriesaffected >= 17.0.0, < 17.0.15; affected >= 18.0.0, < 18.1.12; affected >= 19.0.0, < 19.1.16; affected >= 20.0.0, < 20.1.11; affected >= 21.0.0, < 21.0.4

CWE

CWE-284

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.