CVE-2022-21705Network attack vector

Authenticated code execution via unsafe section parsing

Published Feb 23, 2022 · Updated Apr 23, 2025

Code injection in October CMS before 1.0.474, 1.1.0 through 1.1.9, and 2.0.0 through 2.1.26 allows remote authenticated users to execute PHP. SectionParser::render appended the full markup block after parsing section markers; the fix splits it again on section separators and retains only the final segment. Backend page-management permissions are required, and code execution is limited to panels using safe mode with restricted permissions.

CVSS severity7.2
High
EPSS probability8.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Code injection in October CMS before 1.0.474, 1.1.0 through 1.1.9, and 2.0.0 through 2.1.26 allows remote authenticated users to execute PHP. SectionParser::render appended the full markup block after parsing section markers; the fix splits it again on section separators and retains only the final segment. Backend page-management permissions are required, and code execution is limited to panels using safe mode with restricted permissions.

The record

CVE
CVE-2022-21705
Published
Feb 23, 2022
Updated
Apr 23, 2025
Vendor
October CMS
Product
October CMS
Classifications
CWE-74, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 23, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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=< 1.0.474
  2. Affected versionversion=>= 1.1.0, < 1.1.10
  3. Affected versionversion=>= 2.0.0, < 2.1.27

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

October CMS · October CMSversion=< 1.0.474; version=>= 1.1.0, < 1.1.10; version=>= 2.0.0, < 2.1.27

Published CVSS scores

7.2GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.5NIST NVDAV:N/AC:M/Au:S/C:C/I:C/A:C

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059Command and Scripting Interpreter

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo