Cloudreve before 4.16.1 fails to revalidate share access when restoring cached navigator state from a context_hint UUID. Attackers who previously had valid share access can replay the cached hint to generate signed file URLs for up to 300 seconds after the share is deleted, expires, or reaches zero remaining downloads.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Cloudreve Subscribe
Cloudreve Subscribe

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/cloudreve/cloudreve/security/advisories/GHSA-vx2m-jpxr-xv7w cve-icon cve-icon
https://www.vulncheck.com/advisories/cloudreve-before-4.16.1-authentication-bypass-via-cached-context-hint cve-icon cve-icon
History

Sun, 27 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Description Cloudreve before 4.16.1 fails to revalidate share access when restoring cached navigator state from a context_hint UUID. Attackers who previously had valid share access can replay the cached hint to generate signed file URLs for up to 300 seconds after the share is deleted, expires, or reaches zero remaining downloads.
Title Cloudreve before 4.16.1 Authentication Bypass via Cached Context Hint
First Time appeared Cloudreve
Cloudreve cloudreve
Weaknesses CWE-863
CPEs cpe:2.3:a:cloudreve:cloudreve:*:*:*:*:*:*:*:*
Vendors & Products Cloudreve
Cloudreve cloudreve
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-27T17:02:38.060Z

Reserved: 2026-09-27T16:38:56.427Z

Link: CVE-2026-101056

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-09-27T18:16:31.667

Modified: 2026-09-27T18:16:31.777

Link: CVE-2026-101056

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-27T18:30:18Z

Weaknesses