CVE-2026-101056

Cloudreve before 4.16.1 Authentication Bypass via Cached Context Hint

Published Sep 27, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 8, 2026, 3:22 PM
Reserved
Sep 27, 2026, 4:38 PM
Status
Deferred
Published
Sep 27, 2026, 6:16 PM
Modified
Oct 8, 2026, 4:17 PM