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High ALAS2023-2026-1728 7 CVEs

Important: php8.3 security update (Amazon Linux 2023)

Published May 25, 2026 · Updated May 26, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-7568: Signed integer overflow in metaphone() CVE-2026-7262: NULL pointer dereference in SOAP apache:Map decoder with missing <value> CVE-2026-7261: In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when SoapServer is configured with SOAP_PERSISTENCE_SESSION, the handler object is persisted across requests via session storage. However, in the case SOAP requests results in an error, the persistance is handled incorrectly, resulting in freeing the object while keeping a pointer to it, which may lead to use-after-free. This may lead to memory corruption, information disclosure, or process crashes, with confidentiality, integrity, and availability impact on the vulnerable system. CVE-2026-7259: Null pointer dereference in php_mb_check_encoding() via mb_ereg_search_init() CVE-2026-7258: Out-of-bounds read in urldecode() CVE-2026-6735: In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, 8.5.* before 8.5.6, due to improper sanitation of user data, it allows an attacker to compose an URL, which will cause the target to execute arbitrary JavaScript code (XSS) on the target's machine when the target is viewing the PHP-FPM status page. CVE-2026-6722: In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the SOAP extension's object deduplication mechanism stores pointers to PHP objects in a global map without incrementing their reference counts. When an apache:Map node contains duplicate keys, processing the second entry overwrites the first in the temporary result map, freeing the original PHP object while its stale pointer remains in the map. A subsequent href reference to the freed node can copy the dangling pointer into the result. As PHP string allocations can reclaim the freed memory region, an attacker with control over the SOAP request body can exploit this use-after-free to achieve remote code execution.

Fixed packages 60

ReleasePackageFixed in
Amazon Linux · 2023 php8.3 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-bcmath 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-bcmath-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-cli 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-cli-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-common 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-common-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-dba 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-dba-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-dbg 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-dbg-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-debugsource 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-devel 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-embedded 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-embedded-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-enchant 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-enchant-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-ffi 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-ffi-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-fpm 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-fpm-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-gd 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-gd-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-gmp 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-gmp-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-intl 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-intl-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-ldap 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-ldap-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-mbstring 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-mbstring-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-modphp 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-modphp-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-mysqlnd 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-mysqlnd-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-odbc 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-odbc-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-opcache 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-opcache-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-pdo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-pdo-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-pgsql 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-pgsql-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-process 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-process-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-pspell 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-pspell-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-snmp 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-snmp-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-soap 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-soap-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-sodium 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-sodium-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-tidy 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-tidy-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-xml 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-xml-debuginfo 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-zip 0:8.3.31-1.amzn2023.0.1
Amazon Linux · 2023 php8.3-zip-debuginfo 0:8.3.31-1.amzn2023.0.1

Vulnerabilities 7

  • Critical 9.5
    CVE-2026-6722

    Use-After-Free in SOAP using Apache map

    In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the SOAP extension's object deduplication mechanism stores pointers to PHP objects in a global map without incrementing their reference counts. When an apac…

    PHP Group PHP php5 php7.0 Debian Ubuntu Azure Linux Alpine Wolfi
  • High 7.3
    CVE-2026-6735 Public exploit

    XSS within PHP-FPM status endpoint

    In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, 8.5.* before 8.5.6, due to improper sanitation of user data, it allows an attacker to compose an URL, which will cause the target to execute arbitrary JavaScript code (XSS) on the …

    PHP Group PHP php5 php7.0 Debian Ubuntu Azure Linux Alpine Wolfi
  • Medium 6.3
    CVE-2026-7258

    Out-of-bounds read in urldecode() on NetBSD

    In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, some functions, including urldecode(), pass signed char to ctype functions (like isxdigit()). On the systems with default signed char and optimized table-lo…

    PHP Group PHP php php8.2 Debian Ubuntu Azure Linux Alpine Wolfi
  • Medium 6.3
    CVE-2026-7261

    SoapServer session-persisted object use-after-free via SOAP header fault

    In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when SoapServer is configured with SOAP_PERSISTENCE_SESSION, the handler object is persisted across requests via session storage. However, in the case SOAP …

    PHP Group PHP php5 php7.0 Debian Ubuntu Azure Linux Alpine Wolfi
  • Medium 6.3
    CVE-2026-7568

    Signed integer overflow in metaphone()

    In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the metaphone() function in ext/standard/metaphone.c uses a signed int variable to track the current position within the input string. If a string longer th…

    PHP Group PHP php5 php7.0 Debian Ubuntu Azure Linux Alpine Wolfi
  • Low 2.9
    CVE-2026-7262

    NULL pointer dereference in SOAP apache:Map decoder with missing <value>

    In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when a SOAP server has a typemap configured, the decoding process contains a mistake which checks the wrong variable in case of missing value element.  This…

    PHP Group PHP php5 php7.0 Debian Ubuntu Azure Linux Alpine Wolfi
  • Low 2.1
    CVE-2026-7259

    Null pointer dereference in php_mb_check_encoding() via mb_ereg_search_init()

    In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, a mismatch between encoding lists in Oniguruma and mbfl leads to  a NULL pointer dereference, resulting in a segmentation fault and denial of service. The v…

    PHP Group PHP php php8.1 Debian Ubuntu Azure Linux Alpine Wolfi

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-6722.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-6735.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-7258.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-7259.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-7261.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-7262.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-7568.html