CVE-2022-0323Public exploit

PHP code execution via generated-comment section-name injection

Published Jan 21, 2022 · Updated Aug 2, 2024

Code injection in bobthecow Mustache.php 2.0.0 through 2.14.0 allows attackers to execute arbitrary PHP code via crafted section names. Compiler.php inserts exported section names into single-line comments in generated PHP, allowing embedded line breaks to terminate the comment and introduce executable statements. Exploitation requires control of a section name in an untrusted template; enabling strict_callables does not block the injected code.

CVSS severity5.3
Medium
EPSS probability0.69%
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 bobthecow Mustache.php 2.0.0 through 2.14.0 allows attackers to execute arbitrary PHP code via crafted section names. Compiler.php inserts exported section names into single-line comments in generated PHP, allowing embedded line breaks to terminate the comment and introduce executable statements. Exploitation requires control of a section name in an untrusted template; enabling strict_callables does not block the injected code.

The record

CVE
CVE-2022-0323
Published
Jan 21, 2022
Updated
Aug 2, 2024
Vendor
bobthecow
Product
Mustache.php
Classifications
CWE-1336, CWE-94, T1059
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=unspecified <2.14.1

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

bobthecow · Mustache.phpversion=unspecified <2.14.1

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.3huntr.devCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
CWE-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

Public exploit references

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