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Fencer Vulns
low 3.3

CVE-2024-9026 json

PHP-FPM logs from children may be altered

published 2024-09-27 2 y ago modified 2026-09-08 2 mo ago also BIT-libphp-2024-9026 , BIT-php-2024-9026 , BIT-php-min-2024-9026 , EUVD-2024-49671 , GHSA-865w-9rf3-2wh5

cvss
3.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits
0
none known

Summary

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.

Patch / fix

  • bitnami libphp 8.1.30, 8.2.24, 8.3.12
  • bitnami php 8.1.30, 8.2.24, 8.3.12
  • bitnami php-min 8.1.30, 8.2.24, 8.3.12
  • PHP Group PHP 8.1.30, 8.2.24, 8.3.12
  • php php 8.1.30, 8.2.24, 8.3.12
  • php8.2 Debian 12 8.2.24-1~deb12u1

debian advisories DEBIAN-CVE-2024-9026

  • php8.1 Ubuntu 22.04 LTS 8.1.2-1ubuntu2.19
  • php8.3 Ubuntu 24.04 LTS 8.3.6-0ubuntu0.24.04.2

ubuntu advisories UBUNTU-CVE-2024-9026

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • php RHEL 9 8.0.30-2.el9
  • php-gd RHEL 9 8.0.30-2.el9
  • php-cli RHEL 9 8.0.30-2.el9
  • php-dba RHEL 9 8.0.30-2.el9
  • php-dbg RHEL 9 8.0.30-2.el9
  • php-ffi RHEL 9 8.0.30-2.el9
  • php-fpm RHEL 9 8.0.30-2.el9
  • php-gmp RHEL 9 8.0.30-2.el9

red hat advisories RHSA-2025:7315RHSA-2024:10951RHSA-2024:10952RHSA-2024:10950RHSA-2024:10949

  • php7 SLE Module for Legacy 15 SP6, SLE Module for Legacy 15 SP5, openSUSE Leap 15.6 +1 more 7.4.33-150400.4.40.1
  • php7-fpm SLE Module for Legacy 15 SP6, SLE Module for Legacy 15 SP5, openSUSE Leap 15.6 +1 more 7.4.33-150400.4.40.1
  • php7-test openSUSE Leap 15.6, openSUSE Leap 15.5 7.4.33-150400.4.40.1
  • php7-embed SLE Module for Package Hub 15 SP6, SLE Module for Package Hub 15 SP5, openSUSE Leap 15.6 +1 more 7.4.33-150400.4.40.1
  • php7-fastcgi SLE Module for Legacy 15 SP6, SLE Module for Legacy 15 SP5, openSUSE Leap 15.6 +1 more 7.4.33-150400.4.40.1
  • apache2-mod_php7 SLE Module for Legacy 15 SP6, SLE Module for Legacy 15 SP5, openSUSE Leap 15.6 +1 more 7.4.33-150400.4.40.1
  • php74 SLE Software Development Kit 12 SP5, SLE Module for Web and Scripting 12 7.4.33-1.71.1
  • php8 SLE Module for Web and Scripting 15 SP6, openSUSE Leap 15.6 8.2.24-150600.3.6.1

suse advisories SUSE-SU-2024:3733-1SUSE-SU-2024:3732-1SUSE-SU-2024:3729-1SUSE-SU-2024:3664-1

  • php8 openSUSE Tumbleweed 8.3.12-1.1

opensuse advisories openSUSE-SU-2024:14376-1

  • php AlmaLinux 9 8.2.25-1.module_el9.5.0+132+adb0ae7a
  • php-gd AlmaLinux 9 8.2.25-1.module_el9.5.0+132+adb0ae7a
  • php-cli AlmaLinux 9 8.2.25-1.module_el9.5.0+132+adb0ae7a
  • php-dba AlmaLinux 9 8.2.25-1.module_el9.5.0+132+adb0ae7a
  • php-dbg AlmaLinux 9 8.2.25-1.module_el9.5.0+132+adb0ae7a
  • php-ffi AlmaLinux 9 8.2.25-1.module_el9.5.0+132+adb0ae7a
  • php-fpm AlmaLinux 9 8.2.25-1.module_el9.5.0+132+adb0ae7a
  • php-gmp AlmaLinux 9 8.2.25-1.module_el9.5.0+132+adb0ae7a

almalinux advisories ALSA-2024:10949ALSA-2024:10950ALSA-2024:10951ALSA-2024:10952

  • php-pecl-rrd Rocky Linux 9 2.0.3-4.module+el9.6.0+32040+1f1dedb8
  • php-pecl-rrd Rocky Linux 9 2.0.3-4.module+el9.6.0+32041+66e66fb7
  • php-pecl-rrd Rocky Linux 9 2.0.3-4.module+el9.6.0+32042+808943ae
  • php-pecl-zip Rocky Linux 9 1.22.3-1.module+el9.6.0+32041+66e66fb7
  • php-pecl-zip Rocky Linux 9 1.22.3-1.module+el9.6.0+32042+808943ae
  • php-pecl-apcu Rocky Linux 9 5.1.23-1.module+el9.6.0+32041+66e66fb7
  • php-pecl-apcu Rocky Linux 9 5.1.23-1.module+el9.6.0+32042+808943ae
  • php-pecl-xdebug3 Rocky Linux 9 3.2.2-2.module+el9.6.0+32041+66e66fb7

rocky linux advisories RLSA-2024:10949RLSA-2024:10950RLSA-2024:10951RLSA-2024:10952

  • php81 Alpine 3.19 8.1.30-r0
  • php82 Alpine 3.20 8.2.24-r0
  • php83 Alpine 3.20 8.3.12-r0

alpine advisories ALPINE-CVE-2024-9026

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • php CBL-Mariner 2.0 8.1.30-1
  • php Azure Linux 3.0 8.3.12-1

azure linux advisories AZL-50144AZL-50172

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-9026 updated cvss 3.3

php: PHP-FPM Log Manipulation Vulnerability

  • Red Hat Enterprise Linux 7 php, php-gd, php-cli, php-dba, php-fpm, php-pdo, +18 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 php, libzip, php-gd, php-cli, php-dba, php-dbg, +30 more Red Hat Enterprise Linux 10 php
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux AppStream (v. 8) php 7.4.33-2.module+el8.10.0+22485+a3539972, php 8.2.25-1.module+el8.10.0+22478+9eb07224, libzip 1.6.1-1.module+el8.10.0+22485+a3539972, libzip 1.7.3-1.module+el8.10.0+20770+a5eca186, php-gd 7.4.33-2.module+el8.10.0+22485+a3539972, php-gd 8.2.25-1.module+el8.10.0+22478+9eb07224, +60 more
    fixed: vendor fix RHSA-2024:10952
  • Red Hat Enterprise Linux AppStream (v. 9) php 8.0.30-2.el9, php-gd 8.0.30-2.el9, php-cli 8.0.30-2.el9, php-dba 8.0.30-2.el9, php-dbg 8.0.30-2.el9, php-ffi 8.0.30-2.el9, +76 more
    fixed: vendor fix RHSA-2024:10950

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/php/php-src/security/advisories/GHSA-865w-9rf3-2wh5 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
NVD 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
OSV 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
bitnami libphp
<8.1.30
>=8.2.0, <8.2.24
>=8.3.0, <8.3.12
8.1.30
8.2.24
8.3.12
bitnami php
<8.1.30
>=8.2.0, <8.2.24
>=8.3.0, <8.3.12
8.1.30
8.2.24
8.3.12
bitnami php-min
<8.1.30
>=8.2.0, <8.2.24
>=8.3.0, <8.3.12
8.1.30
8.2.24
8.3.12

Affected products

  • PHP Group PHP
  • php php

Classification

Weakness
  • CWE-158 Improper Neutralization of Null Byte or NUL Character
  • CWE-117 Improper Output Neutralization for Logs
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of php/php-src published their own advisory on GitHub. Reviewed sources take precedence over it.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.