CVE-2026-101056, CoreCVE

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MEDIUM

Cloudreve before 4.16.1 Authentication Bypass via Cached Context Hint

Published Sep 27, 2026

6.9

MEDIUM

CVSS 4.0

EPSS 0.19%

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 products

Vendor Cloudreve Product Cloudreve Default
unaffected
- Version
  0
  Status
  affected
  Constraints
  <4.16.1
- Version
  4.16.1
  Status
  unaffected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Cloudreve

unaffected

Version	Status	Constraints
0	affected	<4.16.1
4.16.1	unaffected	-

github.com/cloudreve/Cloudreve/v4

Go

Introduced 0 Fixed not fixed
github.com/cloudreve/Cloudreve

Go

Introduced 0 Fixed not fixed
github.com/cloudreve/Cloudreve/v3

Go

Introduced 0 Fixed not fixed

Ecosystem	Package	Fixed
Go	github.com/cloudreve/Cloudreve/v4	not fixed
Go	github.com/cloudreve/Cloudreve	not fixed
Go	github.com/cloudreve/Cloudreve/v3	not fixed

Remediation

No remediation recorded yet.

Metrics

Weaknesses (1)

CWE-863

Incorrect Authorization

References (2)

https://github.com/cloudreve/cloudreve/security/advisories/GHSA-vx2m-jpxr-xv7w
vendor-advisory
https://www.vulncheck.com/advisories/cloudreve-before-4.16.1-authentication-bypass-via-cached-context-hint
third-party-advisory

Link	Providers	Tags
https://github.com/cloudreve/cloudreve/security/advisories/GHSA-vx2m-jpxr-xv7w		vendor-advisory
https://www.vulncheck.com/advisories/cloudreve-before-4.16.1-authentication-bypass-via-cached-context-hint		third-party-advisory