Cloudreve before 4.16.1 Authentication Bypass via Cached Context Hint (CVE-2026-101056) | HOL Guard CVE

Medium · CVSS 6.9CVE-2026-101056

Cloudreve before 4.16.1 Authentication Bypass via Cached Context Hint

Answer in brief

CVE-2026-101056 records a Medium severity (CVSS 6.9) vulnerability in Cloudreve before 4.16.1 Authentication Bypass via Cached Context Hint. The current sources do not mark it as known exploited. The current feed maps cloudreve/cloudreve (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 27, 2026Updated Sep 27, 2026Source checked Sep 27, 2026First seen by HOL Sep 27, 2026Material review Sep 27, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.9
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps cloudreve/cloudreve (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
cloudreve/cloudrevegeneric	>=0 <4.16.1	4.16.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for cloudreve/cloudreve.
Review the reported fix. Update cloudreve/cloudreve to 4.16.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 27, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.