CVE-2026-109619
PHP Stale Internal Request-State Vulnerability
CVSS
8.1
Alta
EPSS
100.0%
p100
KEV
SIM
26 de out. de 2026
Exploit Today
80
0-100
Publicado: 21 de out. de 2026 · Última mod.: 5 de nov. de 2026 · CWE-416 · CWE-755 · CWE-824
Produto
PHP Group / PHP
Vulnerabilidade
PHP Stale Internal Request-State Vulnerability
Adicionado ao KEV
26 de out. de 2026
Corrigir até
29 de out. de 2026
Uso conhecido em ransomware
Não
Descrição resumida
PHP contains a stale internal request-state vulnerability that allows for unauthenticated remote code execution.
Ação necessária
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Notas
This vulnerability affects an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://www.php.net/ ; https://www.cisa.gov/news-events/alerts/2026/10/21/critical-vulnerabilities-php-require-immediate-patching ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-109619
PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE).
- github.comhttps://github.com/php/php-src/security/advisories/GHSA-6wmf-4rv5-p3rp
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/21/16
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/21/17
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/21/23
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/21/7
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/22/14
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/22/15
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/22/16
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/22/19
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/22/2
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/22/20
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/23/4
- arcticwolf.comhttps://arcticwolf.com/resources/blog/php2shell-critical-php-vulnerabilities-enable-unauthenticated-remote-code-execution/
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-166980.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-566435.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-566512.html
- php2shell.delftintellab.comhttps://php2shell.delftintellab.com/
- www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-109619
- www.wiz.iohttps://www.wiz.io/blog/php2shell-php-rce