CVE-2026-46696Network attack vector

Superuser impersonation via session-store and builder bypasses

Published Sep 14, 2026 · Updated Sep 14, 2026

Privilege escalation in October CMS System Module before 3.7.17 or 4.0.0 through 4.2.22 allows remote authenticated users to impersonate superusers. The Twig policy exposes the Laravel session store without method limits and fails to block raw SQL methods across Eloquent forwarding chains. Only sites with cms.safe_mode enabled, a markup-editing backend user, and an existing superuser are exposed; the user can read database values and forge that superuser's session.

CVSS severity3.3
Low
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in October CMS System Module before 3.7.17 or 4.0.0 through 4.2.22 allows remote authenticated users to impersonate superusers. The Twig policy exposes the Laravel session store without method limits and fails to block raw SQL methods across Eloquent forwarding chains. Only sites with cms.safe_mode enabled, a markup-editing backend user, and an existing superuser are exposed; the user can read database values and forge that superuser's session.

The record

CVE
CVE-2026-46696
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
October CMS
Product
October CMS System Module
Classifications
CWE-284, CWE-269, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 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=< 3.7.17
  2. Affected versionversion=>= 4.0.0, < 4.2.23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

October CMS · October CMS System Moduleversion=< 3.7.17; version=>= 4.0.0, < 4.2.23

Published CVSS scores

3.3GitHubCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-269Improper Privilege Management
T1078Valid Accounts

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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