CVE-2024-9026
Apache PHP PHP-FPM Log Pollution Vulnerability
Description
In PHP versions 8.1.* before 8.1.30, 8.2.* before 8.2.24, 8.3.* before 8.3.12, when using PHP-FPM SAPI and it is configured to catch workers output through catch_workers_output = yes, it may be possible to pollute the final log or remove up to 4 characters from the log messages by manipulating log message content. Additionally, if PHP-FPM is configured to use syslog output, it may be possible to further remove log data using the same vulnerability.
INFO
Published Date :
Oct. 8, 2024, 4:15 a.m.
Last Modified :
Aug. 19, 2025, 4:26 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] |
Solution
- Update the PHP packages to the latest versions.
- For PHP 8.1, upgrade to version 8.1.30 or later.
- For PHP 8.2, upgrade to version 8.2.24 or later.
- For PHP 8.3, upgrade to version 8.3.12 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-9026.
| URL | Resource |
|---|---|
| https://github.com/php/php-src/security/advisories/GHSA-865w-9rf3-2wh5 | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-9026 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-9026
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-9026 vulnerability anywhere in the article.
-
Cybersecurity News
Multiple Vulnerabilities Discovered in PHP, Prompting Urgent Security Updates
The PHP project has recently released a security advisory, addressing several vulnerabilities affecting various versions of PHP. These vulnerabilities range from potential log tampering to arbitrary f ... Read more
The following table lists the changes that have been made to the
CVE-2024-9026 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Modified Analysis by [email protected]
Aug. 19, 2025
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:php-fpm:php-fpm:*:*:*:*:*:*:*:* versions from (including) 8.3.0 up to (excluding) 8.3.12 *cpe:2.3:a:php-fpm:php-fpm:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (excluding) 8.2.24 *cpe:2.3:a:php-fpm:php-fpm:*:*:*:*:*:*:*:* versions from (including) 8.1.0 up to (excluding) 8.1.30 OR *cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 8.1.0 up to (excluding) 8.1.30 *cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (excluding) 8.2.24 *cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 8.3.0 up to (excluding) 8.3.12 Changed Reference Type PHP Group: https://github.com/php/php-src/security/advisories/GHSA-865w-9rf3-2wh5 Types: Exploit, Third Party Advisory PHP Group: https://github.com/php/php-src/security/advisories/GHSA-865w-9rf3-2wh5 Types: Exploit, Vendor Advisory -
Reanalysis by [email protected]
Oct. 16, 2024
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:php-fpm:php-fpm:*:*:*:*:*:*:*:* versions up to (excluding) 8.1.30 *cpe:2.3:a:php-fpm:php-fpm:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (excluding) 8.2.24 *cpe:2.3:a:php-fpm:php-fpm:*:*:*:*:*:*:*:* versions from (including) 8.3.0 up to (excluding) 8.3.12 OR *cpe:2.3:a:php-fpm:php-fpm:*:*:*:*:*:*:*:* versions from (including) 8.1.0 up to (excluding) 8.1.30 *cpe:2.3:a:php-fpm:php-fpm:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (excluding) 8.2.24 *cpe:2.3:a:php-fpm:php-fpm:*:*:*:*:*:*:*:* versions from (including) 8.3.0 up to (excluding) 8.3.12 -
Initial Analysis by [email protected]
Oct. 16, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Changed Reference Type https://github.com/php/php-src/security/advisories/GHSA-865w-9rf3-2wh5 No Types Assigned https://github.com/php/php-src/security/advisories/GHSA-865w-9rf3-2wh5 Exploit, Third Party Advisory Added CWE NIST NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:a:php-fpm:php-fpm:*:*:*:*:*:*:*:* versions up to (excluding) 8.1.30 *cpe:2.3:a:php-fpm:php-fpm:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (excluding) 8.2.24 *cpe:2.3:a:php-fpm:php-fpm:*:*:*:*:*:*:*:* versions from (including) 8.3.0 up to (excluding) 8.3.12 -
CVE Received by [email protected]
Oct. 08, 2024
Action Type Old Value New Value Added Description In PHP versions 8.1.* before 8.1.30, 8.2.* before 8.2.24, 8.3.* before 8.3.12, when using PHP-FPM SAPI and it is configured to catch workers output through catch_workers_output = yes, it may be possible to pollute the final log or remove up to 4 characters from the log messages by manipulating log message content. Additionally, if PHP-FPM is configured to use syslog output, it may be possible to further remove log data using the same vulnerability. Added Reference PHP Group https://github.com/php/php-src/security/advisories/GHSA-865w-9rf3-2wh5 [No types assigned] Added CWE PHP Group CWE-158 Added CWE PHP Group CWE-117 Added CVSS V3.1 PHP Group AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N