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PHP: PHP: Denial of Service via improper handling of signed characters in ctype functions

🗓️ 30 Jun 2026 11:12:36Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 5 Views

PHP DoS via signed characters passed to ctype in urldecode causing memory access errors.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9aarch64php0:8.0.30-6.el9_8php-0:8.0.30-6.el9_8.aarch64.rpm
Red Hat Enterprise Linux9ppc64lephp0:8.0.30-6.el9_8php-0:8.0.30-6.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9s390xphp0:8.0.30-6.el9_8php-0:8.0.30-6.el9_8.s390x.rpm
Red Hat Enterprise Linux9x86_64php0:8.0.30-6.el9_8php-0:8.0.30-6.el9_8.x86_64.rpm
Red Hat Enterprise Linux9aarch64php-bcmath0:8.0.30-6.el9_8php-bcmath-0:8.0.30-6.el9_8.aarch64.rpm
Red Hat Enterprise Linux9ppc64lephp-bcmath0:8.0.30-6.el9_8php-bcmath-0:8.0.30-6.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9s390xphp-bcmath0:8.0.30-6.el9_8php-bcmath-0:8.0.30-6.el9_8.s390x.rpm
Red Hat Enterprise Linux9x86_64php-bcmath0:8.0.30-6.el9_8php-bcmath-0:8.0.30-6.el9_8.x86_64.rpm
Red Hat Enterprise Linux9aarch64php-bcmath-debuginfo0:8.0.30-6.el9_8php-bcmath-debuginfo-0:8.0.30-6.el9_8.aarch64.rpm
Red Hat Enterprise Linux9ppc64lephp-bcmath-debuginfo0:8.0.30-6.el9_8php-bcmath-debuginfo-0:8.0.30-6.el9_8.ppc64le.rpm
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01 Jul 2026 23:52Current
7High risk
Vulners AI Score7
CVSS 3.17.5
CVSS 46.3
EPSS0.00337
SSVC
5