Description
In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the SOAP extension's object deduplication mechanism stores pointers to PHP objects in a global map without incrementing their reference counts. When an apache:Map node contains duplicate keys, processing the second entry overwrites the first in the temporary result map, freeing the original PHP object while its stale pointer remains in the map. A subsequent href reference to the freed node can copy the dangling pointer into the result. As PHP string allocations can reclaim the freed memory region, an attacker with control over the SOAP request body can exploit this use-after-free to achieve remote code execution.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PHP Group | PHP | 8.2.* – < 8.2.31, 8.3.* – < 8.3.31, 8.4.* – < 8.4.21, 8.5.* – < 8.5.6 | 8.2.31 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | php8.4 | 8.4.21-1 | — |
| Debian 13 | php8.4 | 8.4.21-1~deb13u1 | — |
| Debian 12 | php8.2 | 8.2.31-1~deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | php8.5 | 8.5.4-0ubuntu1.1 | — |
| Ubuntu 25.10 | php8.4 | 8.4.11-1ubuntu1.2 | — |
| Ubuntu 24.04 LTS | php8.3 | 8.3.6-0ubuntu0.24.04.9 | — |
| Ubuntu 22.04 LTS | php8.1 | 8.1.2-1ubuntu2.24 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | php7.4 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | php7.2 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | php7.0 | 7.0.33-0ubuntu0.16.04.16+esm19 | USN-8513-1 |
| Ubuntu Pro 14.04 LTS | php5 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | php +23 | 8.3.31-1.el10_2 | RHSA-2026:23388 |
| RHEL 10 | php8.4 +23 | 8.4.21-1.el10_2 | RHSA-2026:22649 |
| RHEL 9 | apcu-panel +2 | 5.1.23-1.module+el9.6.0+22647+1741ae35 | RHSA-2026:22143, RHSA-2026:22142 |
| RHEL 9 | php +23 | 8.0.30-6.el9_8 | RHSA-2026:33449, RHSA-2026:22143, RHSA-2026:22142 |
| RHEL 9 | php-pecl-redis6 | 6.1.0-2.module+el9.6.0+22647+1741ae35 | RHSA-2026:22142 |
| RHEL 9 | php-pecl-rrd | 2.0.3-4.module+el9.6.0+22647+1741ae35 | RHSA-2026:22143, RHSA-2026:22142 |
| RHEL 9 | php-pecl-xdebug3 | 3.2.2-2.module+el9.7.0+24111+199d2cc4 | RHSA-2026:22143, RHSA-2026:22142 |
| RHEL 9 | php-pecl-zip | 1.22.3-1.module+el9.6.0+22647+1741ae35 | RHSA-2026:22143, RHSA-2026:22142 |
| RHEL 8 | apcu-panel +2 | 5.1.18-1.module+el8.10.0+22485+a3539972 | RHSA-2026:34354, RHSA-2026:22305 |
| RHEL 8 | libzip +2 | 1.6.1-1.module+el8.10.0+22485+a3539972 | RHSA-2026:34354, RHSA-2026:22305 |
| RHEL 8 | php +25 | 7.4.33-4.module+el8.10.0+24352+91532d3e | RHSA-2026:34354, RHSA-2026:22305 |
| RHEL 8 | php-pear | 1:1.10.13-1.module+el8.10.0+22485+a3539972 | RHSA-2026:34354, RHSA-2026:22305 |
| RHEL 8 | php-pecl-rrd | 2.0.1-1.module+el8.10.0+22485+a3539972 | RHSA-2026:34354, RHSA-2026:22305 |
| RHEL 8 | php-pecl-xdebug | 2.9.5-1.module+el8.10.0+22485+a3539972 | RHSA-2026:34354 |
| RHEL 8 | php-pecl-xdebug3 | 3.2.2-2.module+el8.10.0+20798+00eaeb41 | RHSA-2026:22305 |
| RHEL 8 | php-pecl-zip | 1.18.2-1.module+el8.10.0+22485+a3539972 | RHSA-2026:34354, RHSA-2026:22305 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | php +26 | 8.5.9-1.hum1 | RHSA-2026:47200 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | php +23 | 8.3.31-1.el10_2 | ALSA-2026:23388 |
| AlmaLinux 10 | php8.4 +23 | 8.4.21-1.el10_2 | ALSA-2026:22649 |
| AlmaLinux 9 | apcu-panel +2 | 5.1.23-1.module_el9.4.0+65+49ff6472 | ALSA-2026:22143, ALSA-2026:22142 |
| AlmaLinux 9 | php +23 | 8.0.30-6.el9_8 | ALSA-2026:33449, ALSA-2026:22143, ALSA-2026:22142 |
| AlmaLinux 9 | php-pecl-redis6 | 6.1.0-2.module_el9.6.0+151+5f31e576 | ALSA-2026:22142 |
| AlmaLinux 9 | php-pecl-rrd | 2.0.3-4.module_el9.4.0+65+49ff6472 | ALSA-2026:22143, ALSA-2026:22142 |
| AlmaLinux 9 | php-pecl-xdebug3 | 3.2.2-2.module_el9.4.0+65+49ff6472 | ALSA-2026:22143, ALSA-2026:22142 |
| AlmaLinux 9 | php-pecl-zip | 1.22.3-1.module_el9.4.0+65+49ff6472 | ALSA-2026:22143, ALSA-2026:22142 |
| AlmaLinux 8 | apcu-panel +2 | 5.1.18-1.module_el8.6.0+2750+78feabcb | ALSA-2026:34354, ALSA-2026:22305 |
| AlmaLinux 8 | libzip +1 | 1.6.1-1.module_el8.6.0+2750+78feabcb | ALSA-2026:34354, ALSA-2026:22305 |
| AlmaLinux 8 | libzip-devel | 1.6.1-1.module_el8.6.0+3239+bedf0508 | ALSA-2026:34354, ALSA-2026:22305 |
| AlmaLinux 8 | php +25 | 7.4.33-4.module_el8.10.0+4209+2ed16ff0 | ALSA-2026:34354, ALSA-2026:22305 |
| AlmaLinux 8 | php-pear | 1:1.10.13-1.module_el8.10.0+3935+28808425 | ALSA-2026:34354, ALSA-2026:22305 |
| AlmaLinux 8 | php-pecl-rrd | 2.0.1-1.module_el8.6.0+2750+78feabcb | ALSA-2026:34354, ALSA-2026:22305 |
| AlmaLinux 8 | php-pecl-xdebug | 2.9.5-1.module_el8.6.0+2750+78feabcb | ALSA-2026:34354 |
| AlmaLinux 8 | php-pecl-xdebug3 | 3.2.2-2.module_el8.10.0+3796+30ed3ef7 | ALSA-2026:22305 |
| AlmaLinux 8 | php-pecl-zip | 1.18.2-1.module_el8.6.0+2750+78feabcb | ALSA-2026:34354, ALSA-2026:22305 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | php | 8.0.30-6.el9_8 | RLSA-2026:33449 |
| Rocky Linux 8 | libzip | 1.6.1-1.module+el8.10.0+1604+6558efc7 | RLSA-2026:34354 |
| Rocky Linux 8 | php-pear | 1:1.10.13-1.module+el8.10.0+1604+6558efc7 | RLSA-2026:34354 |
| Rocky Linux 8 | php-pecl-apcu | 5.1.18-1.module+el8.10.0+1604+6558efc7 | RLSA-2026:34354 |
| Rocky Linux 8 | php-pecl-rrd | 2.0.1-1.module+el8.4.0+414+2e7afcdd | RLSA-2026:34354 |
| Rocky Linux 8 | php-pecl-xdebug | 2.9.5-1.module+el8.10.0+1604+6558efc7 | RLSA-2026:34354 |
| Rocky Linux 8 | php-pecl-zip | 1.18.2-1.module+el8.10.0+1604+6558efc7 | RLSA-2026:34354 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | php8 | 8.5.6-1.1 | openSUSE-SU-2026:10747-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | php83 | 8.3.31-r0 | — |
| Alpine v3.24 | php84 | 8.4.21-r0 | — |
| Alpine v3.24 | php85 | 8.5.6-r0 | — |
| Alpine v3.23 | php83 | 8.3.31-r0 | — |
| Alpine v3.23 | php84 | 8.4.21-r0 | — |
| Alpine v3.23 | php85 | 8.5.6-r0 | — |
| Alpine v3.22 | php82 | 8.2.31-r0 | — |
| Alpine v3.22 | php83 | 8.3.36-r0 | — |
| Alpine v3.22 | php84 | 8.4.27-r0 | — |
| Alpine v3.19 | php81 | 8.1.34-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | php8.2 +27 | 8.2.31-1.amzn2023.0.1 | ALAS2023-2026-1727 |
| Amazon Linux 2023 | php8.3 +28 | 8.3.31-1.amzn2023.0.1 | ALAS2023-2026-1728 |
| Amazon Linux 2023 | php8.4 +27 | 8.4.21-1.amzn2023.0.1 | ALAS2023-2026-1726 |
| Amazon Linux 2023 | php8.5 +26 | 8.5.6-1.amzn2023.0.1 | ALAS2023-2026-1733 |
| Amazon Linux 2 | php +23 | 5.4.16-46.amzn2.0.7 | ALAS2-2026-3316 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | php | 8.3.31-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | php +23 | 8.0.30-6.el9_8 | ELSA-2026-33449 |
| Oracle Linux 8 | apcu-panel +2 | 5.1.18-1.module+el8.10.0+90472+f810484b | ELSA-2026-34354 |
| Oracle Linux 8 | libzip +2 | 1.6.1-1.module+el8.10.0+90472+f810484b | ELSA-2026-34354 |
| Oracle Linux 8 | php +25 | 7.4.33-4.module+el8.10.0+90942+d80f51f3 | ELSA-2026-34354 |
| Oracle Linux 8 | php-pear | 1:1.10.13-1.module+el8.10.0+90472+f810484b | ELSA-2026-34354 |
| Oracle Linux 8 | php-pecl-rrd | 2.0.1-1.module+el8.10.0+90472+f810484b | ELSA-2026-34354 |
| Oracle Linux 8 | php-pecl-xdebug | 2.9.5-1.module+el8.10.0+90472+f810484b | ELSA-2026-34354 |
| Oracle Linux 8 | php-pecl-zip | 1.18.2-1.module+el8.10.0+90472+f810484b | ELSA-2026-34354 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | php-8.2 | 8.2.31-r0 | — |
Advisories 28
- ALSA-2026:22142 Important: php:8.3 security update AlmaLinux Security Advisories · Nov 6, 2026
- ALSA-2026:22649 Important: php8.4 security update AlmaLinux Security Advisories · Nov 6, 2026
- ALSA-2026:23388 Important: php security update AlmaLinux Security Advisories · Nov 6, 2026
- ALSA-2026:22143 Important: php:8.2 security update AlmaLinux Security Advisories · Nov 6, 2026
- ALSA-2026:22305 Important: php:8.2 security update AlmaLinux Security Advisories · Nov 6, 2026
- ALSA-2026:33449 Important: php security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:34354 Important: php:7.4 security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-2455 Oracle Solaris Drittanbieterkomponenten: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 27, 2026
- WID-SEC-2026-1433 PHP: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 21, 2026
- RHSA-2026:47200 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Sep 22, 2026
- RHSA-2026:34354 Red Hat Security Advisory: php:7.4 security update Red Hat Security Advisories (RHSA) · Sep 22, 2026
- RHSA-2026:33449 Red Hat Security Advisory: php security update Red Hat Security Advisories (RHSA) · Sep 22, 2026
- RHSA-2026:23388 Red Hat Security Advisory: php security update Red Hat Security Advisories (RHSA) · Sep 22, 2026
- RHSA-2026:22649 Red Hat Security Advisory: php8.4 security update Red Hat Security Advisories (RHSA) · Sep 22, 2026
- RHSA-2026:22305 Red Hat Security Advisory: php:8.2 security update Red Hat Security Advisories (RHSA) · Sep 22, 2026
- RHSA-2026:22143 Red Hat Security Advisory: php:8.2 security update Red Hat Security Advisories (RHSA) · Sep 22, 2026
- RHSA-2026:22142 Red Hat Security Advisory: php:8.3 security update Red Hat Security Advisories (RHSA) · Sep 22, 2026
- RLSA-2026:33449 Important: php security update Rocky Linux Security Advisories · Jul 29, 2026
- ALAS2023-2026-1733 Important: php8.5 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jul 13, 2026
- ALAS2023-2026-1726 Important: php8.4 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jul 13, 2026
- USN-8513-1 php7.0 vulnerabilities Ubuntu Security Notices (USN) · Jul 6, 2026
- RLSA-2026:34354 Important: php:7.4 security update Rocky Linux Security Advisories · Jul 2, 2026
- ELSA-2026-33449 Important: php security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 2, 2026
- ELSA-2026-34354 Important: php:7.4 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 2, 2026
- ALAS2-2026-3316 Important: php security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 26, 2026
- ALAS2023-2026-1728 Important: php8.3 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · May 26, 2026
- ALAS2023-2026-1727 Important: php8.2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · May 26, 2026
- openSUSE-SU-2026:10747-1 php8-8.5.6-1.1 on GA media SUSE / openSUSE Security Updates · May 12, 2026