CVE-2026-5258Network attack vector

Unauthenticated file read via unchecked filename traversal

Published Apr 1, 2026 · Updated Apr 1, 2026

Path traversal in IOPaint 1.5.3 File Manager allows remote attackers to read arbitrary files via a crafted filename parameter. The _get_file method joins filename directly to the selected media directory and returns the resulting existing path without a containment check. The endpoint is reachable only when an input directory enables File Manager; a successful request discloses any existing file readable by the service account.

CVSS severity7.3
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in IOPaint 1.5.3 File Manager allows remote attackers to read arbitrary files via a crafted filename parameter. The _get_file method joins filename directly to the selected media directory and returns the resulting existing path without a containment check. The endpoint is reachable only when an input directory enables File Manager; a successful request discloses any existing file readable by the service account.

The record

CVE
CVE-2026-5258
Published
Apr 1, 2026
Updated
Apr 1, 2026
Vendor
Sanster
Product
IOPaint
Classifications
CWE-22, T1190, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 1, 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=1.5.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sanster · IOPaintversion=1.5.3

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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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