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Multiple critical vulnerabilities affecting PHP 8 have been addressed in updates up to version 8.5.9. These include a stack overflow in phar with circular symlinks, an SQL injection vulnerability in ext-pgsql, an out-of-bounds write in bccomp(), and an upgrade to libgd to fix related issues. The vulnerabilities impact various PHP 8 branches prior to their respective fixed versions. A security update is available and should be applied to mitigate these risks.

This security update for PHP 8 addresses several critical vulnerabilities: CVE-2026-7260 is a stack overflow in phar when processing circular symlinks; CVE-2026-17543 is an SQL injection vulnerability in the ext-pgsql extension via E'...' backslash breakout; CVE-2026-17544 is an out-of-bounds write in the bccomp() function triggered by crafted operands and scale; and CVE-2026-9672 involves an upgrade to libgd to fix unspecified issues. The update brings PHP to version 8.5.9, which includes fixes for these vulnerabilities. The affected versions span multiple PHP 8 branches, including >=8.2.0 <8.2.33, >=8.3.0 <8.3.33, >=8.4.0 <8.4.24, and >=8.5.0 <8.5.9. The vendor advisory from Red Hat confirms the availability of patches and recommends updating to version 8.5.9.

Detailed information about Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update affecting Red Hat Product Security Red Hat. Ge

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update - Live Threat Intelligence - Threat Radar | OffSeq.com

https://access.redhat.com/errata/RHSA-2026:47200

https://images.redhat.com/

https://access.redhat.com/security/cve/CVE-2026-17544

https://access.redhat.com/security/updates/classification/

https://access.redhat.com/security/cve/CVE-2026-17543

https://access.redhat.com/security/cve/CVE-2026-7260

Canonical URL

https://access.redhat.com/errata/RHSA-2026:56969

https://access.redhat.com/security/updates/classification/#important

2509254

2509256

RHEL-223949

SUSE ratings

URL of this CSAF notice

SUSE Bug 1273075

SUSE Bug 1273076

SUSE Bug 1273077

SUSE Bug 1273078

SUSE CVE CVE-2026-17543 page

SUSE CVE CVE-2026-17544 page

SUSE CVE CVE-2026-7260 page

SUSE CVE CVE-2026-9672 page

Security update for php8

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