4.3

CVE-2026-55495: cloudreve Path Traversal

CVSS: 4.3v3.1MediumDeferred
AliasesGHSA-49h3-cwhj-4737GO-2026-6097
Published 31-07-2026Last modified 31-07-2026
Open JSON

Vulnerability summary

CVE-2026-55495 is a medium (CVSS 4.3) Path Traversal vulnerability in cloudreve. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 30.3% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.38%
0%100%
Low · +0.12 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:21761-1SUSE-SU-2026:23625-1

Timeline

  1. 31-07-2026
    PublishedVulnerability first disclosed.
  2. 31-07-2026
    Last modifiedVulnerability information updated.

Description

Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the WOPI PUT_RELATIVE handler passes X-WOPI-SuggestedTarget to URI.JoinRaw as a path rather than a filename, allowing slash and dot-dot segments to escape the source file directory and create or conditionally overwrite files elsewhere in the same owner account. This issue is fixed in version 4.17.0.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.38%

Chance of exploitation in the next 30 days

Percentile

30%

Versus all other CVEs

30-day change

+0.12 pp

From 0.26% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.38%

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< 4.0.0-20260613023150-7968e50429ef
Cloudreve1 product
Github.com/cloudreve1 product
  • CloudreveAll versions (No fix recorded)

3 vendors · 4 products

References

4 links