Description
In PHP versions 8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1 when using the PDO PostgreSQL driver with PDO::ATTR_EMULATE_PREPARES enabled, an invalid character sequence (such as \x99) in a prepared statement parameter may cause the quoting function PQescapeStringConn to return NULL, leading to a null pointer dereference in pdo_parse_params() function. This may lead to crashes (segmentation fault) and affect the availability of the target server.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PHP Group | PHP | 8.1.* – < 8.1.34, 8.2.* – < 8.2.30, 8.3.* – < 8.3.29, 8.4.* – < 8.4.16, 8.5.* – < 8.5.1 | 8.1.34 |
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 | 8.4.16-1 | — |
| Debian 13 | php8.4 | 8.4.16-1~deb13u1 | DSA-6088-1 |
| Debian 12 | php8.2 | 8.2.30-1~deb12u1 | DSA-6154-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | php8.4 | 8.4.11-1ubuntu1.1 | USN-7953-1 |
| Ubuntu 24.04 LTS | php8.3 | 8.3.6-0ubuntu0.24.04.6 | USN-7953-1 |
| Ubuntu 22.04 LTS | php8.1 | 8.1.2-1ubuntu2.23 | USN-7953-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | php7.4 | 7.4.3-4ubuntu2.29+esm3 | USN-7953-1 |
| Ubuntu Pro 18.04 LTS | php7.2 | 7.2.24-0ubuntu0.18.04.17+esm12 | USN-7953-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | php +23 | 8.3.29-1.el10_1 | RHSA-2026:1628 |
| RHEL 9 | apcu-panel +2 | 5.1.23-1.module+el9.4.0+20748+b46899d2 | RHSA-2026:1429, RHSA-2026:1409 |
| RHEL 9 | php +23 | 8.2.30-1.module+el9.7.0+23849+7b831f17 | RHSA-2026:1429, RHSA-2026:1409 |
| RHEL 9 | php-pecl-redis6 | 6.1.0-2.module+el9.6.0+22647+1741ae35 | RHSA-2026:1429 |
| RHEL 9 | php-pecl-rrd | 2.0.3-4.module+el9.4.0+20748+b46899d2 | RHSA-2026:1429, RHSA-2026:1409 |
| RHEL 9 | php-pecl-xdebug3 | 3.2.2-2.module+el9.4.0+20796+bd4564df | RHSA-2026:1429, RHSA-2026:1409 |
| RHEL 9 | php-pecl-zip | 1.22.3-1.module+el9.4.0+20748+b46899d2 | RHSA-2026:1429, RHSA-2026:1409 |
| RHEL 8 | apcu-panel +2 | 5.1.23-1.module+el8.10.0+20770+a5eca186 | RHSA-2026:1412 |
| RHEL 8 | libzip +2 | 1.7.3-1.module+el8.10.0+20770+a5eca186 | RHSA-2026:1412 |
| RHEL 8 | php +23 | 8.2.30-1.module+el8.10.0+23848+33d54484 | RHSA-2026:1412 |
| RHEL 8 | php-pear | 1:1.10.14-1.module+el8.10.0+20770+a5eca186 | RHSA-2026:1412 |
| RHEL 8 | php-pecl-rrd | 2.0.3-1.module+el8.10.0+20770+a5eca186 | RHSA-2026:1412 |
| RHEL 8 | php-pecl-xdebug3 | 3.2.2-2.module+el8.10.0+20798+00eaeb41 | RHSA-2026:1412 |
| RHEL 8 | php-pecl-zip | 1.22.3-1.module+el8.10.0+20770+a5eca186 | RHSA-2026:1412 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | php +23 | 8.3.19-1.el10_0.1 | RHSA-2026:1185 |
| RHEL 9.6 EUS | apcu-panel +2 | 5.1.23-1.module+el9.4.0+20748+b46899d2 | RHSA-2026:1190, RHSA-2026:1187 |
| RHEL 9.6 EUS | php +23 | 8.2.28-1.module+el9.6.0+23892+f0eec4a0.2 | RHSA-2026:1190, RHSA-2026:1187 |
| RHEL 9.6 EUS | php-pecl-redis6 | 6.1.0-2.module+el9.6.0+22647+1741ae35 | RHSA-2026:1190 |
| RHEL 9.6 EUS | php-pecl-rrd | 2.0.3-4.module+el9.4.0+20748+b46899d2 | RHSA-2026:1190, RHSA-2026:1187 |
| RHEL 9.6 EUS | php-pecl-xdebug3 | 3.2.2-2.module+el9.4.0+20796+bd4564df | RHSA-2026:1190, RHSA-2026:1187 |
| RHEL 9.6 EUS | php-pecl-zip | 1.22.3-1.module+el9.4.0+20748+b46899d2 | RHSA-2026:1190, RHSA-2026:1187 |
| RHEL 9.4 EUS | apcu-panel +2 | 5.1.23-1.module+el9.4.0+20748+b46899d2 | RHSA-2026:1169 |
| RHEL 9.4 EUS | php +23 | 8.2.13-1.module+el9.4.0+23893+7c48bdfc.2 | RHSA-2026:1169 |
| RHEL 9.4 EUS | php-pecl-rrd | 2.0.3-4.module+el9.4.0+20748+b46899d2 | RHSA-2026:1169 |
| RHEL 9.4 EUS | php-pecl-xdebug3 | 3.2.2-2.module+el9.4.0+20796+bd4564df | RHSA-2026:1169 |
| RHEL 9.4 EUS | php-pecl-zip | 1.22.3-1.module+el9.4.0+20748+b46899d2 | RHSA-2026:1169 |
| Red Hat Hardened Images 1 | php +26 | 8.5.5-1.1.hum1 | RHSA-2026:7614 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | php +23 | 8.3.29-1.el10_1 | ALSA-2026:1628 |
| AlmaLinux 9 | apcu-panel +2 | 5.1.23-1.module_el9.4.0+65+49ff6472 | ALSA-2026:1429, ALSA-2026:1409 |
| AlmaLinux 9 | php +23 | 8.2.30-1.module_el9.7.0+205+fe410f10 | ALSA-2026:1429, ALSA-2026:1409 |
| AlmaLinux 9 | php-pecl-redis6 | 6.1.0-2.module_el9.6.0+151+5f31e576 | ALSA-2026:1429 |
| AlmaLinux 9 | php-pecl-rrd | 2.0.3-4.module_el9.4.0+65+49ff6472 | ALSA-2026:1429, ALSA-2026:1409 |
| AlmaLinux 9 | php-pecl-xdebug3 | 3.2.2-2.module_el9.4.0+65+49ff6472 | ALSA-2026:1429, ALSA-2026:1409 |
| AlmaLinux 9 | php-pecl-zip | 1.22.3-1.module_el9.4.0+65+49ff6472 | ALSA-2026:1429, ALSA-2026:1409 |
| AlmaLinux 8 | apcu-panel +2 | 5.1.23-1.module_el8.10.0+3796+30ed3ef7 | ALSA-2026:1412 |
| AlmaLinux 8 | libzip +2 | 1.7.3-1.module_el8.10.0+3796+30ed3ef7 | ALSA-2026:1412 |
| AlmaLinux 8 | php +23 | 8.2.30-1.module_el8.10.0+4108+cff35472 | ALSA-2026:1412 |
| AlmaLinux 8 | php-pear | 1:1.10.14-1.module_el8.10.0+3796+30ed3ef7 | ALSA-2026:1412 |
| AlmaLinux 8 | php-pecl-rrd | 2.0.3-1.module_el8.10.0+3796+30ed3ef7 | ALSA-2026:1412 |
| AlmaLinux 8 | php-pecl-xdebug3 | 3.2.2-2.module_el8.10.0+3796+30ed3ef7 | ALSA-2026:1412 |
| AlmaLinux 8 | php-pecl-zip | 1.22.3-1.module_el8.10.0+3796+30ed3ef7 | ALSA-2026:1412 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | php | 8.3.29-1.el10_1 | RLSA-2026:1628 |
| Rocky Linux 9 | php-pecl-apcu | 5.1.23-1.module+el9.7.0+40004+bf50a568 | RLSA-2026:1429, RLSA-2026:1409 |
| Rocky Linux 9 | php-pecl-redis6 | 6.1.0-2.module+el9.7.0+40005+715283ec | RLSA-2026:1429 |
| Rocky Linux 9 | php-pecl-rrd | 2.0.3-4.module+el9.7.0+40003+454ed3c4 | RLSA-2026:1429, RLSA-2026:1409 |
| Rocky Linux 9 | php-pecl-xdebug3 | 3.2.2-2.module+el9.7.0+40004+bf50a568 | RLSA-2026:1429, RLSA-2026:1409 |
| Rocky Linux 9 | php-pecl-zip | 1.22.3-1.module+el9.7.0+40004+bf50a568 | RLSA-2026:1429, RLSA-2026:1409 |
| Rocky Linux 8 | libzip | 1.7.3-1.module+el8.10.0+1596+477f03f8 | RLSA-2026:1412 |
| Rocky Linux 8 | php | 8.2.30-1.module+el8.10.0+40072+7124940c | RLSA-2026:1412 |
| Rocky Linux 8 | php-pear | 1:1.10.14-1.module+el8.10.0+1596+477f03f8 | RLSA-2026:1412 |
| Rocky Linux 8 | php-pecl-apcu | 5.1.23-1.module+el8.10.0+1596+477f03f8 | RLSA-2026:1412 |
| Rocky Linux 8 | php-pecl-rrd | 2.0.3-1.module+el8.10.0+1596+477f03f8 | RLSA-2026:1412 |
| Rocky Linux 8 | php-pecl-xdebug3 | 3.2.2-2.module+el8.10.0+1596+477f03f8 | RLSA-2026:1412 |
| Rocky Linux 8 | php-pecl-zip | 1.22.3-1.module+el8.10.0+1596+477f03f8 | RLSA-2026:1412 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | php8 +5 | 8.3.29-150700.3.9.1 | SUSE-SU-2026:0086-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | php8 +4 | 8.4.16-160000.1.1 | SUSE-SU-2026:20146-1 |
| SLES 16.0 | php8 +4 | 8.4.16-160000.1.1 | SUSE-SU-2026:20146-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | php8 | 8.4.16-1.1 | openSUSE-SU-2025:15837-1 |
| openSUSE Leap 16.0 | php8 +5 | 8.4.16-160000.1.1 | openSUSE-SU-2026:20113-1 |
| openSUSE Leap 15.6 | php8 +5 | 8.2.30-150600.3.25.1 | SUSE-SU-2026:0071-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | php83 | 8.3.29-r0 | — |
| Alpine v3.24 | php84 | 8.4.16-r0 | — |
| Alpine v3.24 | php85 | 8.5.1-r0 | — |
| Alpine v3.23 | php83 | 8.3.29-r0 | — |
| Alpine v3.23 | php84 | 8.4.16-r0 | — |
| Alpine v3.23 | php85 | 8.5.1-r0 | — |
| Alpine v3.22 | php82 | 8.2.30-r0 | — |
| Alpine v3.22 | php83 | 8.3.29-r0 | — |
| Alpine v3.22 | php84 | 8.4.16-r0 | — |
| Alpine v3.19 | php81 | 8.1.34-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | php8.1 +26 | 8.1.34-1.amzn2023.0.1 | ALAS2023-2025-1355 |
| Amazon Linux 2023 | php8.2 +27 | 8.2.30-1.amzn2023.0.1 | ALAS2023-2025-1354 |
| Amazon Linux 2023 | php8.3 +28 | 8.3.29-1.amzn2023.0.1 | ALAS2023-2025-1353 |
| Amazon Linux 2023 | php8.4 +27 | 8.4.16-1.amzn2023.0.1 | ALAS2023-2025-1352 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | php | 8.3.29-1 | — |
| Azure Linux 2 (CBL-Mariner) | php | 8.1.34-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | php +23 | 8.3.29-1.el10_1 | ELSA-2026-1628 |
| Oracle Linux 9 | apcu-panel +2 | 5.1.23-1.module+el9.4.0+90261+af5cc950 | ELSA-2026-1429, ELSA-2026-1409 |
| Oracle Linux 9 | php +23 | 8.2.30-1.module+el9.7.0+90777+7055ad44 | ELSA-2026-1429, ELSA-2026-1409 |
| Oracle Linux 9 | php-pecl-redis6 | 6.1.0-2.module+el9.6.0+90525+5083e899 | ELSA-2026-1429 |
| Oracle Linux 9 | php-pecl-rrd | 2.0.3-4.module+el9.4.0+90261+af5cc950 | ELSA-2026-1429, ELSA-2026-1409 |
| Oracle Linux 9 | php-pecl-xdebug3 | 3.2.2-2.module+el9.4.0+90261+af5cc950 | ELSA-2026-1429, ELSA-2026-1409 |
| Oracle Linux 9 | php-pecl-zip | 1.22.3-1.module+el9.4.0+90261+af5cc950 | ELSA-2026-1429, ELSA-2026-1409 |
| Oracle Linux 8 | apcu-panel +2 | 5.1.23-1.module+el8.10.0+90469+8883f508 | ELSA-2026-1412 |
| Oracle Linux 8 | libzip +2 | 1.7.3-1.module+el8.10.0+90469+8883f508 | ELSA-2026-1412 |
| Oracle Linux 8 | php +23 | 8.2.30-1.module+el8.10.0+90775+243071a5 | ELSA-2026-1412 |
| Oracle Linux 8 | php-pear | 1:1.10.14-1.module+el8.10.0+90469+8883f508 | ELSA-2026-1412 |
| Oracle Linux 8 | php-pecl-rrd | 2.0.3-1.module+el8.10.0+90469+8883f508 | ELSA-2026-1412 |
| Oracle Linux 8 | php-pecl-xdebug3 | 3.2.2-2.module+el8.10.0+90469+8883f508 | ELSA-2026-1412 |
| Oracle Linux 8 | php-pecl-zip | 1.22.3-1.module+el8.10.0+90469+8883f508 | ELSA-2026-1412 |
Advisories 35
- RHSA-2026:1409 Red Hat Security Advisory: php:8.2 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:1412 Red Hat Security Advisory: php:8.2 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- ALSA-2026:1628 Important: php security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:1409 Important: php:8.2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:1429 Important: php:8.3 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:1412 Important: php:8.2 security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2025-2887 PHP: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 21, 2026
- RHSA-2026:7614 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 6, 2026
- RHSA-2026:1628 Red Hat Security Advisory: php security update Red Hat Security Advisories (RHSA) · Jul 23, 2026
- RHSA-2026:1429 Red Hat Security Advisory: php:8.3 security update Red Hat Security Advisories (RHSA) · Jul 23, 2026
- WID-SEC-2026-1730 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jul 16, 2026
- RHSA-2026:1190 Red Hat Security Advisory: php:8.3 security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:1187 Red Hat Security Advisory: php:8.2 security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:1185 Red Hat Security Advisory: php security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- RHSA-2026:1169 Red Hat Security Advisory: php:8.2 security update Red Hat Security Advisories (RHSA) · Jul 9, 2026
- USN-7953-1 php7.2, php7.4, php8.1, php8.3, php8.4 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2026:20113-1 Security update for php8 SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15837-1 php8-8.4.16-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20146-1 Security update for php8 SUSE / openSUSE Security Updates · Mar 23, 2026
- DSA-6154-1 php8.2 - security update Debian Security (DSA / DLA) · Mar 2, 2026
- RLSA-2026:1628 Important: php security update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2026:0071-1 Security update for php8 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2026:0086-1 Security update for php8 SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2026-1628 Important: php security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Feb 1, 2026
- ELSA-2026-1409 Important: php:8.2 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jan 29, 2026
- RLSA-2026:1412 Important: php:8.2 security update Rocky Linux Security Advisories · Jan 28, 2026
- RLSA-2026:1409 Important: php:8.2 security update Rocky Linux Security Advisories · Jan 28, 2026
- RLSA-2026:1429 Important: php:8.3 security update Rocky Linux Security Advisories · Jan 28, 2026
- ELSA-2026-1429 Important: php:8.3 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jan 28, 2026
- ELSA-2026-1412 Important: php:8.2 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jan 28, 2026
- ALAS2023-2025-1352 Moderate: php8.4 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jan 7, 2026
- ALAS2023-2025-1353 Moderate: php8.3 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jan 7, 2026
- ALAS2023-2025-1354 Moderate: php8.2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jan 7, 2026
- ALAS2023-2025-1355 Moderate: php8.1 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jan 7, 2026
- DSA-6088-1 php8.4 - security update Debian Security (DSA / DLA) · Dec 21, 2025