CVE-2026-54562 | Cloudreve is a self-hosted file management and sharing syste… | CVSS 6.5 MEDIUM

Description

Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, Cloudreve's remote download workflow accepts user-supplied URLs at POST /api/v4/workflow/download and passes them to the configured downloader without blocking loopback, localhost, IPv6 localhost, or redirect-to-loopback targets, allowing a non-admin user with remote download permission to fetch internal-only URLs and read the response after it is imported into the user's own files. This issue is fixed in version 4.16.1.

Metadata

CVE ID: CVE-2026-54562
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-15 19:04 UTC
Published: 2026-07-15 14:37 UTC
Last updated: 2026-07-15 15:00 UTC
Primary CWE: CWE-918
CWE-918: Server-Side Request Forgery (SSRF)
Vendor / Product: cloudreve / cloudreve
Sources: cve.org · NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
cloudreve	cloudreve	—	< 4.16.1

Weakness (CWE)

CWE	Source	Description
CWE-918	cna	CWE-918: Server-Side Request Forgery (SSRF)

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.5	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References (3)

https://github.com/cloudreve/cloudreve/security/advisories/GHSA-x756-g4x3-c64m https://github.com/cloudreve/cloudreve/security/advisories/GHSA-x756-g4x3-c64m
https://github.com/cloudreve/cloudreve/commit/aaebf317a78f2413d74afd66c21a1f3143711312 https://github.com/cloudreve/cloudreve/commit/aaebf317a78f2413d74afd66c21a1f3143711312
https://github.com/cloudreve/cloudreve/releases/tag/4.16.1 https://github.com/cloudreve/cloudreve/releases/tag/4.16.1