--- id: CVE-2026-109619 title: RCE via stale global state summary: >- 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 i… severity: critical cvss: 9.2 cvssVector: 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N' cvssSource: cna cwe: - CWE-416 - CWE-755 - CWE-824 - CWE-1325 - CWE-1419 vendor: PHP Group product: php-src affected: - php-src >= 8.2.* < 8.2.35 - php-src >= 8.3.* < 8.3.36 - php-src >= 8.4.* < 8.4.27 - php-src >= 8.5.* < 8.5.12 ssvc: exploitation: active automatable: 'no' technicalImpact: total timestamp: '2026-10-27T12:14:16.026916Z' exploited: true exploitAvailable: true published: '2026-10-21' updated: '2026-10-27' sourceUpdated: '2026-10-27T12:58:23.666Z' source: CVEORG sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-109619' references: - url: 'https://github.com/php/php-src/security/advisories/GHSA-6wmf-4rv5-p3rp' - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-109619.json - url: 'https://access.redhat.com/security/cve/CVE-2026-109619' - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2554177' - url: 'https://access.redhat.com/security/vulnerabilities/RHSB-2026-013' - url: 'https://www.cve.org/CVERecord?id=CVE-2026-109619' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109619' - url: 'https://access.redhat.com/errata/RHSA-2026:88693' - url: 'https://access.redhat.com/errata/RHSA-2026:88561' - url: 'https://access.redhat.com/errata/RHSA-2026:87070' - url: 'https://access.redhat.com/errata/RHSA-2026:87071' - url: 'https://access.redhat.com/errata/RHSA-2026:87080' - url: 'https://access.redhat.com/errata/RHSA-2026:87073' - url: 'https://access.redhat.com/errata/RHSA-2026:88565' - url: 'https://access.redhat.com/errata/RHSA-2026:88533' - url: 'https://access.redhat.com/errata/RHSA-2026:88532' - url: 'https://access.redhat.com/errata/RHSA-2026:88659' - url: 'https://access.redhat.com/errata/RHSA-2026:88835' - url: 'https://access.redhat.com/errata/RHSA-2026:88725' - url: 'https://access.redhat.com/errata/RHSA-2026:88834' - url: 'https://access.redhat.com/errata/RHSA-2026:88720' - url: 'https://access.redhat.com/errata/RHSA-2026:87072' - url: 'https://access.redhat.com/errata/RHSA-2026:87079' - url: 'https://access.redhat.com/errata/RHSA-2026:87151' - url: 'https://access.redhat.com/errata/RHSA-2026:87414' tags: - cve.org - in-the-wild - exploit-available - kev - csaf - vex - red-hat epss: 0.99999 epssPercentile: 0.99999 kev: true kevDateAdded: '2026-10-26' kevDueDate: '2026-10-29' kevRansomware: false exploits: github: 25 githubRepos: - 'https://github.com/aarsaputra/php2shell' - 'https://github.com/unlimit0118/CVE-2026-109619-php2shell-poc' - 'https://github.com/cozybear-dev/cve-2026-109619' checkedAt: '2026-10-27T16:12:35.816Z' patched: - enterprise_linux_server_v_7_els - enterprise_linux_server_optional_v_7_els - enterprise_linux_appstream_eus_v_10_0 - enterprise_linux_appstream_v_10 - enterprise_linux_appstream_v_8 - enterprise_linux_appstream_aus_v_8_4 - enterprise_linux_appstream_eus_extension_v_8_4 - enterprise_linux_appstream_aus_v_8_6 - enterprise_linux_appstream_eus_extension_v_8_6 - enterprise_linux_appstream_e4s_v_8_8 - enterprise_linux_appstream_tus_v_8_8 - enterprise_linux_appstream_e4s_v_9_2 - enterprise_linux_appstream_e4s_v_9_4 - enterprise_linux_appstream_eus_v_9_6 - enterprise_linux_appstream_v_9 - hardened_images scores: cna: 9.2 vendor: 8.1 ingestedAt: '2026-10-21T15:02:42.099Z' --- ## Overview 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). ## Affected - `php-src >= 8.2.* < 8.2.35` - `php-src >= 8.3.* < 8.3.36` - `php-src >= 8.4.* < 8.4.27` - `php-src >= 8.5.* < 8.5.12` ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges. ### Workarounds Check the GitHub Security Advisory for mitigation strategies. ## Vendor advisories - **RHSA-2026:88693** · Red Hat · fixed in: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS) · released 2026-10-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:88693) - **RHSA-2026:88561** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0) · released 2026-10-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:88561) - **RHSA-2026:87070** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10) · released 2026-10-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:87070) - **RHSA-2026:87071** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10) · released 2026-10-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:87071) - **RHSA-2026:87080** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8) · released 2026-10-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:87080) - **RHSA-2026:87073** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8) · released 2026-10-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:87073) - **RHSA-2026:88565** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) · released 2026-10-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:88565) - **RHSA-2026:88533** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) · released 2026-10-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:88533) - **RHSA-2026:88532** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8) · released 2026-10-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:88532) - **RHSA-2026:88659** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.2) · released 2026-10-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:88659) - **RHSA-2026:88835** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.4) · released 2026-10-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:88835) - **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9, Red Hat OpenShift Dev Spaces · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9, Red Hat OpenShift Dev Spaces · updated 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-109619.json) - **RHSA-2026:87072** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2026-10-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:87072) - **RHSA-2026:87079** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2026-10-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:87079) - **RHSA-2026:87151** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2026-10-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:87151)