CVE-2024-9026 | PHP-FPM logs from children may be altered

Exp

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.

Published: 2024-10-08 Last update: 2025-11-03 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-9026 is rated Exploit Available (53.1/100): CVSS Low severity, with medium exploitation likelihood (EPSS 0.67%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2024-9026

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2024-9026

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-01 0.87% 0.67% -0.20%
2 2026-04-01 1.01% 0.87% -0.14%
3 2026-02-27 — 1.01% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-9026

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.3 3.1 LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 1.4 [email protected]
3.3 3.1 LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 1.4 [email protected]

Weakness enumeration for CVE-2024-9026

OS Trackers for CVE-2024-9026

vendor priority summary link
alpine — CVE-2024-9026: 2 source package rows (php82, php83); 2 state rows across 1 repos (3.20-community); fixed 2, open 0. https://security.alpinelinux.org/vuln/CVE-2024-9026
debian not yet assigned CVE-2024-9026 not yet assigned priority: Debian including 2 source packages (php7.4, php8.2), 2 status rows across 2 suites (bookworm, bullseye): resolved 2. https://security-tracker.debian.org/tracker/CVE-2024-9026
gentoo high CVE-2024-9026: 1 GLSA(s) (202501-11), 1 atom(s) (dev-lang/php); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2024-9026
redhat low — https://access.redhat.com/security/cve/CVE-2024-9026
suse medium CVE-2024-9026 severity moderate: SUSE including 560 source package names (8.2.24-44.6:apache2-mod_php8-8.2.24-150600.3.6.1, 8.2.24-44.6:php8-8.2.24-150600.3.6.1, …), 1105 product×package rows across 24 product lines (Container bci/php, Container bci/php-apache, … (24 product lines)): Fixed 832, Known Not Affected 273. https://www.suse.com/security/cve/CVE-2024-9026/
ubuntu medium CVE-2024-9026 medium priority: Ubuntu including 6 source packages (php5, php7.0, php7.2, php7.4, php8.1, php8.3), 27 status rows across 7 suites (bionic, focal, jammy, noble, trusty, upstream, xenial): DNE 15, needs-triage 4, not-affected 4, released 4. https://ubuntu.com/security/CVE-2024-9026

Affected software / configurations for CVE-2024-9026

Vendor Product Version Raw CPE
php php >= 8.1.0, < 8.1.30 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php >= 8.2.0, < 8.2.24 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php >= 8.3.0, < 8.3.12 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*

References for CVE-2024-9026

cvelogic Threat Intelligence