CVE-2026-101056

Cloudreve before 4.16.1 Authentication Bypass via Cached Context Hint

MEDIUM
5.3
CVSS Score
Published: September 27, 2026 at 05:02 PM UTC
Updated: October 8, 2026 at 04:17 PM UTC
1 product affected across 1 vendorCloudreve

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.2%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v < 4.16.10
Vendor states this is fixed in 4.16.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-863

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