CVE-2026-28286Public exploitNetwork attack vector

Authenticated restricted-path writes via file API

Published Mar 2, 2026 · Updated Mar 2, 2026

Path validation failure in ZimaOS 1.5.2-beta3 allows remote authenticated users to create files in restricted system directories. The POST /v2_1/files/folder and /v2_1/files/file endpoints accept an attacker-controlled absolute path without enforcing an approved base directory. Low-privilege account access and network reachability are required; successful requests write attacker-chosen files or directories under paths such as /etc and /usr.

CVSS severity8.5
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path validation failure in ZimaOS 1.5.2-beta3 allows remote authenticated users to create files in restricted system directories. The POST /v2_1/files/folder and /v2_1/files/file endpoints accept an attacker-controlled absolute path without enforcing an approved base directory. Low-privilege account access and network reachability are required; successful requests write attacker-chosen files or directories under paths such as /etc and /usr.

The record

CVE
CVE-2026-28286
Published
Mar 2, 2026
Updated
Mar 2, 2026
Vendor
IceWhale Technology Limited
Product
ZimaOS
Classifications
CWE-73, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion== 1.5.2-beta3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IceWhale Technology Limited · ZimaOSversion== 1.5.2-beta3

Published CVSS scores

9.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.5GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-73External Control of File Name or Path
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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