CVE-2021-32649Network attack vector

Authenticated PHP code execution via Twig sandbox bypass

Published Jan 14, 2022 · Updated Apr 23, 2025

Code injection in October CMS before 1.0.473 and 1.1.0 through 1.1.5 allows remote authenticated users to execute PHP code. The Twig SecurityPolicy blocklist omits getTwig and write, so crafted template markup can reach Twig internals and write attacker-controlled PHP. Backend privileges to create, modify, and delete website pages are required, and successful exploitation executes code with the web server process's permissions.

CVSS severity8.8
High
EPSS probability1.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in October CMS before 1.0.473 and 1.1.0 through 1.1.5 allows remote authenticated users to execute PHP code. The Twig SecurityPolicy blocklist omits getTwig and write, so crafted template markup can reach Twig internals and write attacker-controlled PHP. Backend privileges to create, modify, and delete website pages are required, and successful exploitation executes code with the web server process's permissions.

The record

CVE
CVE-2021-32649
Published
Jan 14, 2022
Updated
Apr 23, 2025
Vendor
October CMS
Product
October CMS
Classifications
CWE-94, CWE-74, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 14, 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

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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=< 1.0.473
  2. Affected versionversion=>= 1.1.0, < 1.1.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

October CMS · October CMSversion=< 1.0.473; version=>= 1.1.0, < 1.1.6

Published CVSS scores

8.8NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NISTAV:N/AC:L/Au:S/C:P/I:P/A:P

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-94Improper Control of Generation of Code ('Code Injection')
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

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Your stack

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