CVE-2026-109619 KEV
8.1
HIGH · CVSS 3.1 · EPSS 100% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2026-10-29.
Description
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).
Scoring
| CVSS | 8.1 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 100% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-416 |
| On CISA KEV | yes — remediate by 2026-10-29 |
| Public exploit | none known |
| Published | 2026-10-21 |
| Last modified | 2026-10-26 |
CISA KEV
| Name | PHP Stale Internal Request-State Vulnerability |
|---|---|
| Added | 2026-10-26 |
| Due | 2026-10-29 |
| Vendor / product | PHP Group / PHP |
| Ransomware use | none reported |
Affected (12)
| Vendor | Product |
|---|---|
| paloaltonetworks | pan-os |
| paloaltonetworks | panorama m-200 |
| paloaltonetworks | panorama m-300 |
| paloaltonetworks | panorama m-500 |
| paloaltonetworks | panorama m-600 |
| paloaltonetworks | panorama m-700 |
| paloaltonetworks | panorama virtual appliance |
| paloaltonetworks | wf-500 |
| paloaltonetworks | wf-500-b |
| php | php |
| siemens | ruggedcom ape1808 |
| siemens | ruggedcom ape1808 firmware |
References
- https://github.com/php/php-src/security/advisories/GHSA-6wmf-4rv5-p3rp
- http://www.openwall.com/lists/oss-security/2026/10/21/16
- http://www.openwall.com/lists/oss-security/2026/10/21/17
- http://www.openwall.com/lists/oss-security/2026/10/21/23
- http://www.openwall.com/lists/oss-security/2026/10/21/7
- http://www.openwall.com/lists/oss-security/2026/10/22/14
- http://www.openwall.com/lists/oss-security/2026/10/22/15
- http://www.openwall.com/lists/oss-security/2026/10/22/16
- http://www.openwall.com/lists/oss-security/2026/10/22/19
- http://www.openwall.com/lists/oss-security/2026/10/22/2
- http://www.openwall.com/lists/oss-security/2026/10/22/20
- http://www.openwall.com/lists/oss-security/2026/10/23/4
- https://cert-portal.siemens.com/productcert/html/ssa-566512.html
- https://www.wiz.io/blog/php2shell-php-rce
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