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, the getimagesize() function may leak uninitialized heap memory into the APPn segments (e.g., APP1) when reading images in multi-chunk mode (such as via php://filter). This occurs due to a bug in php_read_stream_all_chunks() that overwrites the buffer without advancing the pointer, leaving tail bytes uninitialized. This may lead to information disclosure of sensitive heap data and affect the confidentiality 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 | 8.0.30-5.el9_7 | RHSA-2026:2799, 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 | 5.1.18-1.module+el8.10.0+22485+a3539972 | RHSA-2026:2470, RHSA-2026:1412 |
| RHEL 8 | libzip +2 | 1.6.1-1.module+el8.10.0+22485+a3539972 | RHSA-2026:2470, RHSA-2026:1412 |
| RHEL 8 | php +25 | 7.4.33-3.module+el8.10.0+23902+d3c8dd8f | RHSA-2026:2470, RHSA-2026:1412 |
| RHEL 8 | php-pear | 1:1.10.13-1.module+el8.10.0+22485+a3539972 | RHSA-2026:2470, RHSA-2026:1412 |
| RHEL 8 | php-pecl-rrd | 2.0.1-1.module+el8.10.0+22485+a3539972 | RHSA-2026:2470, RHSA-2026:1412 |
| 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-2026:1412 |
| RHEL 8 | php-pecl-zip | 1.18.2-1.module+el8.10.0+22485+a3539972 | RHSA-2026:2470, RHSA-2026:1412 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | php +26 | 8.5.5-1.1.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 | 8.0.30-5.el9_7 | ALSA-2026:2799, 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 | 5.1.18-1.module_el8.6.0+2750+78feabcb | ALSA-2026:2470, ALSA-2026:1412 |
| AlmaLinux 8 | libzip +1 | 1.6.1-1.module_el8.6.0+2750+78feabcb | ALSA-2026:2470, ALSA-2026:1412 |
| AlmaLinux 8 | libzip-devel | 1.6.1-1.module_el8.6.0+3239+bedf0508 | ALSA-2026:2470, ALSA-2026:1412 |
| AlmaLinux 8 | php +25 | 7.4.33-3.module_el8.10.0+4114+3b36c618 | ALSA-2026:2470, ALSA-2026:1412 |
| AlmaLinux 8 | php-pear | 1:1.10.13-1.module_el8.10.0+3935+28808425 | ALSA-2026:2470, ALSA-2026:1412 |
| AlmaLinux 8 | php-pecl-rrd | 2.0.1-1.module_el8.6.0+2750+78feabcb | ALSA-2026:2470, ALSA-2026:1412 |
| 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-2026:1412 |
| AlmaLinux 8 | php-pecl-zip | 1.18.2-1.module_el8.6.0+2750+78feabcb | ALSA-2026:2470, 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 | 8.0.30-5.el9_7 | RLSA-2026:2799 |
| 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 | 1.6.1-1.module+el8.10.0+1912+72767185 | RLSA-2026:2470, 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 | 1:1.10.13-1.module+el8.10.0+1605+02e07af7 | RLSA-2026:2470, RLSA-2026:1412 |
| Rocky Linux 8 | php-pecl-apcu | 5.1.18-1.module+el8.10.0+1912+72767185 | RLSA-2026:2470, RLSA-2026:1412 |
| Rocky Linux 8 | php-pecl-rrd | 2.0.1-1.module+el8.4.0+414+2e7afcdd | RLSA-2026:2470, RLSA-2026:1412 |
| 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+1596+477f03f8 | RLSA-2026:1412 |
| Rocky Linux 8 | php-pecl-zip | 1.18.2-1.module+el8.10.0+1912+72767185 | RLSA-2026:2470, 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 | 8.0.30-5.el9_7 | ELSA-2026-2799, 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 | 5.1.18-1.module+el8.10.0+90472+f810484b | ELSA-2026-2470, ELSA-2026-1412 |
| Oracle Linux 8 | libzip +2 | 1.6.1-1.module+el8.10.0+90472+f810484b | ELSA-2026-2470, ELSA-2026-1412 |
| Oracle Linux 8 | php +25 | 7.4.33-3.module+el8.10.0+90781+f71ba651 | ELSA-2026-2470, ELSA-2026-1412 |
| Oracle Linux 8 | php-pear | 1:1.10.13-1.module+el8.10.0+90472+f810484b | ELSA-2026-2470, ELSA-2026-1412 |
| Oracle Linux 8 | php-pecl-rrd | 2.0.1-1.module+el8.10.0+90472+f810484b | ELSA-2026-2470, ELSA-2026-1412 |
| 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-2026-1412 |
| Oracle Linux 8 | php-pecl-zip | 1.18.2-1.module+el8.10.0+90472+f810484b | ELSA-2026-2470, ELSA-2026-1412 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 2 repositories
-
34zY/CVE-2025-14177 ★ 1 · May 18, 2026
PHP getimagesize() CVE-2025-14177 - Heap Memory Leak Exploit Generator Fully functional exploit chain in Python
-
gl1tch0x1/PHP_8.1.x_Exploit ★ 1 · Apr 29, 2026
Automated detection & exploitation of critical PHP vulnerabilities (CVE-2024-4577 bypass, CVE-2025-14177, CVE-2025-14180, CVE-2025-14178)
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 39
- 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-2026:2799 Moderate: 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
- ALSA-2026:2470 Moderate: php:7.4 security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2025-2887 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-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-2026:2799 Red Hat Security Advisory: php security update Red Hat Security Advisories (RHSA) · Jul 23, 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
- 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-2026:2799 Moderate: php security update Rocky Linux Security Advisories · Feb 24, 2026
- ELSA-2026-2799 Moderate: php security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Feb 17, 2026
- RLSA-2026:2470 Moderate: php:7.4 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
- 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
- ALAS2023-2025-1354 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
- 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
- DSA-6088-1 php8.4 - security update Debian Security (DSA / DLA) · Dec 21, 2025