CVE-2026-22692Public exploitNetwork attack vector

Code execution via unrestricted collection class instantiation

Published Apr 14, 2026 · Updated Apr 14, 2026

Twig sandbox bypass in October CMS before 3.7.13 and 4.0.0 through 4.1.4 allows remote authenticated users to execute PHP functions. SafeCollection trusts collection methods through CallsAnyMethod, and mapInto instantiates an attacker-supplied class without a sandbox allowlist. Template-editing permission and CMS_SAFE_MODE=true are required; crafted templates can execute zero-argument PHP functions or read server files.

CVSS severity4.9
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

Twig sandbox bypass in October CMS before 3.7.13 and 4.0.0 through 4.1.4 allows remote authenticated users to execute PHP functions. SafeCollection trusts collection methods through CallsAnyMethod, and mapInto instantiates an attacker-supplied class without a sandbox allowlist. Template-editing permission and CMS_SAFE_MODE=true are required; crafted templates can execute zero-argument PHP functions or read server files.

The record

CVE
CVE-2026-22692
Published
Apr 14, 2026
Updated
Apr 14, 2026
Vendor
October CMS
Product
October CMS
Classifications
CWE-284, CWE-693, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 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=< 3.7.13
  2. Affected versionversion=>= 4.0.0, < 4.1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

October CMS · October CMSversion=< 3.7.13; version=>= 4.0.0, < 4.1.5

Published CVSS scores

4.9GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
6.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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.

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-284Improper Access Control
CWE-693Protection Mechanism Failure
T1190Exploit Public-Facing Application

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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