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High ALSA-2026:56969 3 CVEs

Important: php8.4 security, bug fix, and enhancement update

Published Aug 19, 2026 · Updated Oct 29, 2026

Summary

PHP is an HTML-embedded scripting language. PHP attempts to make it easy for developers to write dynamically generated web pages. PHP also offers built-in database integration for several commercial and non-commercial database management systems, so writing a database-enabled webpage with PHP is fairly simple. The most common use of PHP coding is probably as a replacement for CGI scripts.

Security Fix(es):

* php: ext-pgsql: PHP: SQL injection via improper backslash escaping (CVE-2026-17543)
* php: PHP: Arbitrary code execution via out-of-bounds write in bccomp() (CVE-2026-17544)

Bug Fix(es) and Enhancement(s):

* Rebase PHP to 8.4.24 for CVE-2026-17543 and CVE-2026-7260 and CVE-2026-17544 in 10.2.z (JIRA:AlmaLinux-223949)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 25

ReleasePackageFixed in
AlmaLinux · 10 php8.4 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-bcmath 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-cli 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-common 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-dba 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-dbg 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-devel 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-embedded 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-enchant 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-ffi 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-fpm 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-gd 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-gmp 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-intl 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-ldap 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-mbstring 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-mysqlnd 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-odbc 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-opcache 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-pdo 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-pgsql 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-process 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-snmp 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-soap 8.4.24-1.el10_2
AlmaLinux · 10 php8.4-xml 8.4.24-1.el10_2

Vulnerabilities 3

  • High 8.1
    CVE-2026-17543 Public exploit

    SQL injection in ext-pgsql via E'...' backslash breakout

    Improper escaping of backslashes in attacker-provided parameters would allow for trivial SQL injection in PHP versions from 8.2.* before 8.2.33, from 8.3.* before 8.3.33, from 8.4.* before 8.4.24, and from 8.5.* before 8.5.9.

  • High 8.1
    CVE-2026-17544 Public exploit

    Out-of-bounds write in bccomp() via crafted operand and scale

    Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP versions from 8.4.* before 8.4.24 and from 8.5.* before 8.5.9.

  • Medium 5.4

    Stack overflow in phar with circular symlinks

    Circular symbolic links in phar archives could lead to unbounded recursion, exhausting the C stack and crashing the PHP process, in PHP versions from 8.2.* before 8.2.33, from 8.3.* before 8.3.33, from 8.4.* before 8.4.24, and from 8.5.* before 8.5.9.

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-17543
  • report
    https://access.redhat.com/security/cve/CVE-2026-17544
  • report
    https://bugzilla.redhat.com/2509254
  • report
    https://bugzilla.redhat.com/2509256
  • advisory
    https://errata.almalinux.org/10/ALSA-2026-56969.html