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TI-2019-11720 Aliases CVE-2019-15621GHSA-jchm-73f8-w72j

Improper permissions preservation in Nextcloud Server 16.0.1 causes sharees to be able to…

Priority LOW 31CWE-281Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Improper permissions preservation in Nextcloud Server 16.0.1 causes sharees to be able to reshare with write permissions when sharing the mount point of a share they received, as a public link.

Why it matters now

EPSS 0.01056 64th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Nextcloud Server16.0.2—No fix listedCNA
  • Nextcloud Server Vendor— Affected 16.0.2 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*before 14.0.13; 15.0.0 to before 15.0.9; 16.0.0 to before 16.0.2Vulnerablenextcloud
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* Versions before 14.0.13; 15.0.0 to before 15.0.9; 16.0.0 to before 16.0.2 Vulnerable ·nextcloud

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Nextcloud Server — openSUSE-SU-2020:0220

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2019-11712 Improper input validation in Nextcloud ServerPriority LOW 37
    • TI-2019-11722 Exposure of Private Information in Nextcloud Server 16.0.1 causes the server to send it's…Priority LOW 28
    • TI-2020-06536 Server-side request forgery in Nextcloud ServerPriority LOW 25
    Show all 6 records → Advisory →
  • Advisory ·

    Nextcloud Server — openSUSE-SU-2020:0229

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2019-11712 Improper input validation in Nextcloud ServerPriority LOW 37
    • TI-2019-11722 Exposure of Private Information in Nextcloud Server 16.0.1 causes the server to send it's…Priority LOW 28
    • TI-2020-06536 Server-side request forgery in Nextcloud ServerPriority LOW 25
    Show all 6 records → Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-15621
  2. 2026-10-03 Alias added: GHSA-jchm-73f8-w72j

References

Advisory 3

Other 1

  • TI-2023-20855 Users can delete external storage mount points CVSS 3.1HIGH 7.7
  • TI-2023-11091 Nextcloud download permissions can be changed by resharer CVSS 3.1HIGH 7.5
  • TI-2023-10624 Nextcloud Server vulnerable to SSRF via filter bypass due to lax checking on IPs CVSS 3.1MEDIUM 5.3
  • TI-2025-37238 Cross-site scripting in Nextcloud CVSS 3.1MEDIUM 6.4
  • TI-2023-11086 nextcloud vulnerable to Uncontrolled Resource Consumption CVSS 3.1MEDIUM 6.5
  • TI-2022-18738 Exception logging in Sharepoint app reveals clear-text connection details CVSS 3.1MEDIUM 6.5
See all 188 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences