Description
In PHP from 8.1.* before 8.1.32, from 8.2.* before 8.2.28, from 8.3.* before 8.3.19, from 8.4.* before 8.4.5, when receiving headers from HTTP server, the headers missing a colon (:) are treated as valid headers even though they are not. This may confuse applications into accepting invalid headers.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PHP Group | PHP | 8.1.* – < 8.1.32, 8.2.* – < 8.2.28, 8.3.* – < 8.3.19, 8.4.* – < 8.4.5 | 8.1.32 |
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 | 8.4.5-1 | — |
| Debian 13 | php8.4 | 8.4.5-1 | — |
| Debian 12 | php8.2 | 8.2.28-1~deb12u1 | DSA-5878-1 |
| Debian 11 | php7.4 | 7.4.33-1+deb11u8 | DLA-4088-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | php8.3 | 8.3.6-0ubuntu0.24.04.4 | USN-7400-1 |
| Ubuntu 22.04 LTS | php8.1 | 8.1.2-1ubuntu2.21 | USN-7400-1 |
| Ubuntu 20.04 LTS | php7.4 | 7.4.3-4ubuntu2.29 | USN-7400-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | php7.2 | 7.2.24-0ubuntu0.18.04.17+esm8 | USN-7645-1 |
| Ubuntu Pro 16.04 LTS | php7.0 | 7.0.33-0ubuntu0.16.04.16+esm15 | USN-7645-1 |
| Ubuntu Pro 14.04 LTS | php5 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | php +23 | 8.3.19-1.el10_0 | RHSA-2025:7489 |
| RHEL 9 | apcu-panel +2 | 5.1.21-1.module+el9.1.0.z+15477+cb86791d | RHSA-2025:7432, RHSA-2025:7418, RHSA-2025:4263 |
| RHEL 9 | php +23 | 8.0.30-3.el9_6 | RHSA-2025:7432, RHSA-2025:7431, RHSA-2025:7418 |
| RHEL 9 | php-pecl-redis6 | 6.1.0-2.module+el9.6.0+22647+1741ae35 | RHSA-2025:7418 |
| RHEL 9 | php-pecl-rrd | 2.0.3-4.module+el9.1.0.z+15477+cb86791d | RHSA-2025:7432, RHSA-2025:7418, RHSA-2025:4263 |
| RHEL 9 | php-pecl-xdebug3 | 3.1.4-1.module+el9.1.0.z+15477+cb86791d | RHSA-2025:7432, RHSA-2025:7418, RHSA-2025:4263 |
| RHEL 9 | php-pecl-zip | 1.20.1-1.module+el9.1.0.z+15477+cb86791d | RHSA-2025:7432, RHSA-2025:7418, RHSA-2025:4263 |
| RHEL 8 | apcu-panel +2 | 5.1.18-1.module+el8.10.0+22485+a3539972 | RHSA-2026:2470, RHSA-2025:15687 |
| RHEL 8 | libzip +2 | 1.6.1-1.module+el8.10.0+22485+a3539972 | RHSA-2026:2470, RHSA-2025:15687 |
| RHEL 8 | php +25 | 7.4.33-3.module+el8.10.0+23902+d3c8dd8f | RHSA-2026:2470, RHSA-2025:15687 |
| RHEL 8 | php-pear | 1:1.10.13-1.module+el8.10.0+22485+a3539972 | RHSA-2026:2470, RHSA-2025:15687 |
| RHEL 8 | php-pecl-rrd | 2.0.1-1.module+el8.10.0+22485+a3539972 | RHSA-2026:2470, RHSA-2025:15687 |
| RHEL 8 | php-pecl-xdebug | 2.9.5-1.module+el8.10.0+22485+a3539972 | RHSA-2026:2470 |
| RHEL 8 | php-pecl-xdebug3 | 3.2.2-2.module+el8.10.0+20798+00eaeb41 | RHSA-2025:15687 |
| RHEL 8 | php-pecl-zip | 1.18.2-1.module+el8.10.0+22485+a3539972 | RHSA-2026:2470, RHSA-2025:15687 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | php +23 | 8.3.19-1.el10_0 | ALSA-2025:7489 |
| AlmaLinux 9 | apcu-panel +2 | 5.1.21-1.module_el9.1.0+15+94ba28e4 | ALSA-2025:7432, ALSA-2025:7418, ALSA-2025:4263 |
| AlmaLinux 9 | php +23 | 8.0.30-3.el9_6 | ALSA-2025:7432, ALSA-2025:7431, ALSA-2025:7418 |
| AlmaLinux 9 | php-pecl-redis6 | 6.1.0-2.module_el9.6.0+151+5f31e576 | ALSA-2025:7418 |
| AlmaLinux 9 | php-pecl-rrd | 2.0.3-4.module_el9.1.0+15+94ba28e4 | ALSA-2025:7432, ALSA-2025:7418, ALSA-2025:4263 |
| AlmaLinux 9 | php-pecl-xdebug3 | 3.1.4-1.module_el9.1.0+15+94ba28e4 | ALSA-2025:7432, ALSA-2025:7418, ALSA-2025:4263 |
| AlmaLinux 9 | php-pecl-zip | 1.20.1-1.module_el9.1.0+15+94ba28e4 | ALSA-2025:7432, ALSA-2025:7418, ALSA-2025:4263 |
| AlmaLinux 8 | apcu-panel +2 | 5.1.18-1.module_el8.6.0+2750+78feabcb | ALSA-2026:2470, ALSA-2025:15687 |
| AlmaLinux 8 | libzip +1 | 1.6.1-1.module_el8.6.0+2750+78feabcb | ALSA-2026:2470, ALSA-2025:15687 |
| AlmaLinux 8 | libzip-devel | 1.6.1-1.module_el8.6.0+3239+bedf0508 | ALSA-2026:2470, ALSA-2025:15687 |
| AlmaLinux 8 | php +25 | 7.4.33-3.module_el8.10.0+4114+3b36c618 | ALSA-2026:2470, ALSA-2025:15687 |
| AlmaLinux 8 | php-pear | 1:1.10.13-1.module_el8.10.0+3935+28808425 | ALSA-2026:2470, ALSA-2025:15687 |
| AlmaLinux 8 | php-pecl-rrd | 2.0.1-1.module_el8.6.0+2750+78feabcb | ALSA-2026:2470, ALSA-2025:15687 |
| AlmaLinux 8 | php-pecl-xdebug | 2.9.5-1.module_el8.6.0+2750+78feabcb | ALSA-2026:2470 |
| AlmaLinux 8 | php-pecl-xdebug3 | 3.2.2-2.module_el8.10.0+3796+30ed3ef7 | ALSA-2025:15687 |
| AlmaLinux 8 | php-pecl-zip | 1.18.2-1.module_el8.6.0+2750+78feabcb | ALSA-2026:2470, ALSA-2025:15687 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | php | 8.3.19-1.el10_0 | RLSA-2025:7489 |
| Rocky Linux 9 | php | 8.0.30-3.el9_6 | RLSA-2025:7432, RLSA-2025:7431, RLSA-2025:4263 |
| Rocky Linux 9 | php-pecl-apcu | 5.1.21-1.module+el9.6.0+32040+1f1dedb8 | RLSA-2025:7432, RLSA-2025:7418, RLSA-2025:4263 |
| Rocky Linux 9 | php-pecl-rrd | 2.0.3-4.module+el9.5.0+29598+58484504 | RLSA-2025:7432, RLSA-2025:7418, RLSA-2025:4263 |
| Rocky Linux 9 | php-pecl-xdebug3 | 3.1.4-1.module+el9.6.0+32040+1f1dedb8 | RLSA-2025:7432, RLSA-2025:4263 |
| Rocky Linux 9 | php-pecl-zip | 1.20.1-1.module+el9.6.0+32040+1f1dedb8 | RLSA-2025:7432, RLSA-2025:7418, RLSA-2025:4263 |
| Rocky Linux 8 | libzip | 1.6.1-1.module+el8.10.0+1912+72767185 | RLSA-2026:2470, RLSA-2025:15687 |
| Rocky Linux 8 | php-pear | 1:1.10.13-1.module+el8.10.0+1605+02e07af7 | RLSA-2026:2470, RLSA-2025:15687 |
| Rocky Linux 8 | php-pecl-apcu | 5.1.18-1.module+el8.10.0+1912+72767185 | RLSA-2026:2470, RLSA-2025:15687 |
| Rocky Linux 8 | php-pecl-rrd | 2.0.1-1.module+el8.4.0+414+2e7afcdd | RLSA-2026:2470, RLSA-2025:15687 |
| Rocky Linux 8 | php-pecl-xdebug | 2.9.5-1.module+el8.10.0+1912+72767185 | RLSA-2026:2470 |
| Rocky Linux 8 | php-pecl-xdebug3 | 3.2.2-2.module+el8.10.0+1911+f499711e | RLSA-2025:15687 |
| Rocky Linux 8 | php-pecl-zip | 1.18.2-1.module+el8.10.0+1912+72767185 | RLSA-2026:2470, RLSA-2025:15687 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | php7 +4 | 7.4.33-150400.4.48.1 | SUSE-SU-2025:1025-1 |
| SLES 15 SP6 | php8 +5 | 8.2.28-150600.3.16.1 | SUSE-SU-2025:1012-1 |
| SLES 15 SP5 | php7 +3 | 7.4.33-150400.4.48.1 | SUSE-SU-2025:1025-1 |
| SLES 15 SP5 | php8 +5 | 8.0.30-150400.4.54.1 | SUSE-SU-2025:0994-1 |
| SLES 15 SP4 | php7 +3 | 7.4.33-150400.4.48.1 | SUSE-SU-2025:1025-1 |
| SLES 15 SP4 | php8 +5 | 8.0.30-150400.4.54.1 | SUSE-SU-2025:0994-1 |
| SLES 15 SP3 | php7 | 7.4.33-150200.3.76.1 | SUSE-SU-2025:1026-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | php7 +3 | 7.4.33-150400.4.48.1 | SUSE-SU-2025:1025-1 |
| SLES for SAP 15 SP5 | php8 +5 | 8.0.30-150400.4.54.1 | SUSE-SU-2025:0994-1 |
| SLES for SAP 15 SP4 | php7 +3 | 7.4.33-150400.4.48.1 | SUSE-SU-2025:1025-1 |
| SLES for SAP 15 SP4 | php8 +5 | 8.0.30-150400.4.54.1 | SUSE-SU-2025:0994-1 |
| SLES for SAP 15 SP3 | php7 | 7.4.33-150200.3.76.1 | SUSE-SU-2025:1026-1 |
| SLE HPC 15 SP5 | php8 +5 | 8.0.30-150400.4.54.1 | SUSE-SU-2025:0994-1 |
| SLE HPC 15 SP4 | php7 +3 | 7.4.33-150400.4.48.1 | SUSE-SU-2025:1025-1 |
| SLE HPC 15 SP4 | php8 +5 | 8.0.30-150400.4.54.1 | SUSE-SU-2025:0994-1 |
| SLE HPC 15 SP3 | php7 | 7.4.33-150200.3.76.1 | SUSE-SU-2025:1026-1 |
| SUSE Manager Server 4.3 | php8 +5 | 8.0.30-150400.4.54.1 | SUSE-SU-2025:0994-1 |
| SUSE Enterprise Storage 7.1 | php7 | 7.4.33-150200.3.76.1 | SUSE-SU-2025:1026-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | php8 | 8.3.19-1.1 | openSUSE-SU-2025:14895-1 |
| openSUSE Leap 15.6 | php7 +5 | 7.4.33-150400.4.48.1 | SUSE-SU-2025:1025-1 |
| openSUSE Leap 15.6 | php8 +5 | 8.2.28-150600.3.16.1 | SUSE-SU-2025:1012-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | php83 | 8.3.18-r0 | — |
| Alpine v3.23 | php83 | 8.3.18-r0 | — |
| Alpine v3.22 | php82 | 8.2.28-r0 | — |
| Alpine v3.22 | php83 | 8.3.18-r0 | — |
| Alpine v3.21 | php82 | 8.2.28-r0 | — |
| Alpine v3.21 | php83 | 8.3.18-r0 | — |
| Alpine v3.20 | php82 | 8.2.28-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | php81 | 8.1.32-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | php8.1 +26 | 8.1.32-1.amzn2023.0.1 | ALAS2023-2025-916 |
| Amazon Linux 2023 | php8.2 +27 | 8.2.28-1.amzn2023.0.1 | ALAS2023-2025-936 |
| Amazon Linux 2023 | php8.3 +28 | 8.3.19-1.amzn2023.0.1 | ALAS2023-2025-922 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | php | 8.3.19-1 | — |
| Azure Linux 2 (CBL-Mariner) | php | 8.1.32-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | php +23 | 8.3.19-1.el10_0 | ELSA-2025-7489 |
| Oracle Linux 9 | apcu-panel +2 | 5.1.21-1.module+el9.1.0+20776+c1b960c0 | ELSA-2025-7432, ELSA-2025-7418, ELSA-2025-4263 |
| Oracle Linux 9 | php +23 | 8.0.30-3.el9_6 | ELSA-2025-7432, ELSA-2025-7431, ELSA-2025-7418 |
| Oracle Linux 9 | php-pecl-redis6 | 6.1.0-2.module+el9.6.0+90525+5083e899 | ELSA-2025-7418 |
| Oracle Linux 9 | php-pecl-rrd | 2.0.3-4.module+el9.1.0+20776+c1b960c0 | ELSA-2025-7432, ELSA-2025-7418, ELSA-2025-4263 |
| Oracle Linux 9 | php-pecl-xdebug3 | 3.1.4-1.module+el9.1.0+20776+c1b960c0 | ELSA-2025-7432, ELSA-2025-7418, ELSA-2025-4263 |
| Oracle Linux 9 | php-pecl-zip | 1.20.1-1.module+el9.1.0+20776+c1b960c0 | ELSA-2025-7432, ELSA-2025-7418, ELSA-2025-4263 |
| Oracle Linux 8 | apcu-panel +2 | 5.1.18-1.module+el8.10.0+90472+f810484b | ELSA-2026-2470, ELSA-2025-15687 |
| Oracle Linux 8 | libzip +2 | 1.6.1-1.module+el8.10.0+90472+f810484b | ELSA-2026-2470, ELSA-2025-15687 |
| Oracle Linux 8 | php +25 | 7.4.33-3.module+el8.10.0+90781+f71ba651 | ELSA-2026-2470, ELSA-2025-15687 |
| Oracle Linux 8 | php-pear | 1:1.10.13-1.module+el8.10.0+90472+f810484b | ELSA-2026-2470, ELSA-2025-15687 |
| Oracle Linux 8 | php-pecl-rrd | 2.0.1-1.module+el8.10.0+90472+f810484b | ELSA-2026-2470, ELSA-2025-15687 |
| Oracle Linux 8 | php-pecl-xdebug | 2.9.5-1.module+el8.10.0+90472+f810484b | ELSA-2026-2470 |
| Oracle Linux 8 | php-pecl-xdebug3 | 3.2.2-2.module+el8.10.0+90469+8883f508 | ELSA-2025-15687 |
| Oracle Linux 8 | php-pecl-zip | 1.18.2-1.module+el8.10.0+90472+f810484b | ELSA-2026-2470, ELSA-2025-15687 |
Advisories 41
- ALSA-2025:7489 Important: php security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:7418 Important: php:8.3 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:7431 Moderate: php security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:7432 Moderate: php:8.2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:4263 Moderate: php:8.1 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:2470 Moderate: php:7.4 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:15687 Moderate: php:8.2 security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2025-0566 PHP: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 21, 2026
- RHSA-2026:2470 Red Hat Security Advisory: php:7.4 security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2025:7489 Red Hat Security Advisory: php security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2025:7431 Red Hat Security Advisory: php security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2025:7432 Red Hat Security Advisory: php:8.2 security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2025:7418 Red Hat Security Advisory: php:8.3 security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2025:4263 Red Hat Security Advisory: php:8.1 security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2025:15687 Red Hat Security Advisory: php:8.2 security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- USN-7645-1 php7.0, php7.2 vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- USN-7400-1 php7.4, php8.1, php8.3 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-5878-1 php8.2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-4088-1 php7.4 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2026:2470 Moderate: php:7.4 security update Rocky Linux Security Advisories · Feb 11, 2026
- RLSA-2025:15687 Moderate: php:8.2 security update Rocky Linux Security Advisories · Feb 11, 2026
- ELSA-2026-2470 Moderate: php:7.4 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 11, 2026
- SUSE-SU-2025:1026-1 Security update for php7 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0994-1 Security update for php8 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1025-1 Security update for php7 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2025:14895-1 php8-8.3.19-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- RLSA-2025:7431 Moderate: php security update Rocky Linux Security Advisories · Oct 7, 2025
- RLSA-2025:7432 Moderate: php:8.2 security update Rocky Linux Security Advisories · Oct 7, 2025
- RLSA-2025:4263 Moderate: php:8.1 security update Rocky Linux Security Advisories · Oct 7, 2025
- RLSA-2025:7489 Important: php security update Rocky Linux Security Advisories · Oct 3, 2025
- ELSA-2025-15687 Moderate: php:8.2 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 11, 2025
- RLSA-2025:7418 Important: php:8.3 security update Rocky Linux Security Advisories · Jul 29, 2025
- ELSA-2025-7489 Important: php security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jun 26, 2025
- ELSA-2025-7418 Important: php:8.3 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 22, 2025
- ELSA-2025-7431 Moderate: php security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 22, 2025
- ELSA-2025-7432 Moderate: php:8.2 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 22, 2025
- SUSE-SU-2025:1012-1 Security update for php8 SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2025-4263 Moderate: php:8.1 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 29, 2025
- ALAS2023-2025-936 Moderate: php8.2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 14, 2025
- ALAS2023-2025-916 Moderate: php8.1 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 1, 2025
- ALAS2023-2025-922 Important: php8.3 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 1, 2025