CVE-2024-9026

PHP-FPM logs from children may be altered

LOW
3.3
CVSS Score
Published: October 8, 2024 at 04:07 AM UTC
Updated: June 17, 2026 at 08:23 AM UTC
1 product affected across 1 vendorPHP

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Severity
LOW3.3
Exploit prediction
EPSS 0.5%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

PHP· PHPdrupal
95%
8.1.* ≤ v < 8.1.308.1.0 ≤ v < 8.1.308.2.* ≤ v < 8.2.248.2.0 ≤ v < 8.2.248.3.* ≤ v < 8.3.128.3.0 ≤ v < 8.3.128.1.*8.1.08.2.*8.2.08.3.*8.3.0
Affected range stops below 8.1.30, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.2.24, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.3.12, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.3LOWphp
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-117CWE-158NVD-CWE-Other

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