CVE-2026-72783Hinoki check available

Theoretical path traversal via post-validation normalization

Published Aug 11, 2026 · Updated Aug 11, 2026

Path traversal in Craft CMS 4.0.0-RC1 through 4.18.1 and 5.0.0-RC1 through 5.10.5 creates a theoretical route outside a local volume. Local::ensurePathIsContained validates a file path before normalizing it, allowing normalization to invalidate the containment assumptions used to construct the final disk path. The vendor reports that the condition is not directly exploitable and that no exploitable scenario has been discovered.

CVSS severity6.9
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Path traversal in Craft CMS 4.0.0-RC1 through 4.18.1 and 5.0.0-RC1 through 5.10.5 creates a theoretical route outside a local volume. Local::ensurePathIsContained validates a file path before normalizing it, allowing normalization to invalidate the containment assumptions used to construct the final disk path. The vendor reports that the condition is not directly exploitable and that no exploitable scenario has been discovered.

The record

CVE
CVE-2026-72783
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
Pixel & Tonic
Product
Craft CMS
Classifications
CWE-22
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 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?

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  1. Affected versionversion=4.0.0-RC1 <4.18.2
  2. Affected versionversion=5.0.0-RC1 <5.10.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Pixel & Tonic · Craft CMSversion=4.0.0-RC1 <4.18.2; version=5.0.0-RC1 <5.10.6

Published CVSS scores

6.9VulnCheck CNACVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.2VulnCheck CNACVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A: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.

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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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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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