6.5

CVE-2026-54562: cloudreve Server-Side Request Forgery (SSRF)

CVSS: 6.5v3.1MediumDeferred
AliasesGHSA-x756-g4x3-c64mGO-2026-6023
Published 15-07-2026Last modified 15-07-2026
Open JSON

Vulnerability summary

CVE-2026-54562 is a medium (CVSS 6.5) Server-Side Request Forgery (SSRF) vulnerability in cloudreve. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 33.2% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.40%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:21483-1

Timeline

  1. 15-07-2026
    PublishedVulnerability first disclosed.
  2. 15-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.40%

Chance of exploitation in the next 30 days

Percentile

33%

Versus all other CVEs

30-day change

0.00 pp

From 0.40% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.40%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Github.com/cloudreve/Cloudreve2 products
  • v3≤ 3.0.0-20250225100611-da4e44b77af4 | All versions (No fix recorded)
  • v4< 4.0.0-20260606025411-aaebf317a78f
Cloudreve1 product
Github.com/cloudreve1 product
  • CloudreveAll versions (No fix recorded)

3 vendors · 4 products

References

5 links