CVE-2026-55792Public exploitNetwork attack vector

Authenticated secret disclosure via sandboxed dataUrl file read

Published Jul 1, 2026 · Updated Jul 1, 2026

Sensitive file disclosure in Pixel & Tonic Craft CMS 4 before 4.18.0 and 5 before 5.10.0 allows remote authenticated users to read files. The Twig sandbox permits dataUrl() in system-message templates, while Html::dataUrl() calls file_get_contents() after checks that omit dotfiles such as .env. Exploitation requires utility:system-messages permission and configured email; disclosed security keys support forged sessions and admin takeover.

CVSS severity6.0
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive file disclosure in Pixel & Tonic Craft CMS 4 before 4.18.0 and 5 before 5.10.0 allows remote authenticated users to read files. The Twig sandbox permits dataUrl() in system-message templates, while Html::dataUrl() calls file_get_contents() after checks that omit dotfiles such as .env. Exploitation requires utility:system-messages permission and configured email; disclosed security keys support forged sessions and admin takeover.

The record

CVE
CVE-2026-55792
Published
Jul 1, 2026
Updated
Jul 1, 2026
Vendor
Pixel & Tonic
Product
Craft CMS
Classifications
CWE-200, T1552.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

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

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>= 4.0.0-RC1, < 4.18.0
  2. Affected versionversion=>= 5.0.0-RC1, < 5.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Pixel & Tonic · Craft CMSversion=>= 4.0.0-RC1, < 4.18.0; version=>= 5.0.0-RC1, < 5.10.0

Published CVSS scores

6.0GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1552.001Unsecured Credentials: Credentials In Files

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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