CVE-2026-75592Network attack vectorHinoki check available

Image disclosure via prefix-only containment check

Published Aug 31, 2026 · Updated Sep 1, 2026

Path traversal in Content Folder Kirby before 4.9.5 and 5.0.0 through 5.5.1 allows remote attackers to read sibling-site images via media requests. Dir::realpath() and F::realpath() accept any canonical path whose string begins with the intended root, without requiring an exact match or directory-separator boundary. Exploitation requires a PHP-readable sibling directory with the same name prefix and a valid JSON thumbnail job; processing exposes its image and deletes the job file.

CVSS severity6.9
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Path traversal in Content Folder Kirby before 4.9.5 and 5.0.0 through 5.5.1 allows remote attackers to read sibling-site images via media requests. Dir::realpath() and F::realpath() accept any canonical path whose string begins with the intended root, without requiring an exact match or directory-separator boundary. Exploitation requires a PHP-readable sibling directory with the same name prefix and a valid JSON thumbnail job; processing exposes its image and deletes the job file.

The record

CVE
CVE-2026-75592
Published
Aug 31, 2026
Updated
Sep 1, 2026
Vendor
Content Folder
Product
Kirby
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 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=< 4.9.5
  2. Affected versionversion=>= 5.0.0, < 5.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Content Folder · Kirbyversion=< 4.9.5; version=>= 5.0.0, < 5.5.2

Published CVSS scores

6.9GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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