CVE•Published 2026-10-21•Modified 2026-10-23•8 articles on news•4 live references•NVD data

CVE-2026-109618Php · Php

Vulnerability data via NVD (ingested)

CVSS v3.1

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 7% of all CVEs

Weaknesses (CWE)

CWE-416Use After Free CWE-755Improper Handling of Exceptional Conditions CWE-824Access of Uninitialized Pointer CWE-1325Improperly Controlled Sequential Memory Allocation

Description

PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. Some contexts may not properly account for this scenario and leave request memory in an uninitialized state before performing an allocation. The subsequent request cleanup procedure may read or branch on this memory. Multiple OOM strategies can consistently trigger this condition and lead to remote code execution (RCE).

Timeline

Published 2026-10-21

Modified 2026-10-23

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag700,687 hosts

vuln:CVE-2026-109618

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Php Php"

All exposed Php Php instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Php"

HTTP body or banner mentions "Php" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-109618