{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-109618","assignerOrgId":"dd77f84a-d19a-4638-8c3d-a322d820ed2b","state":"PUBLISHED","assignerShortName":"php","dateReserved":"2026-10-12T21:03:58.117Z","datePublished":"2026-10-21T13:48:34.845Z","dateUpdated":"2026-10-21T14:36:24.229Z"},"containers":{"cna":{"providerMetadata":{"orgId":"dd77f84a-d19a-4638-8c3d-a322d820ed2b","shortName":"php","dateUpdated":"2026-10-21T13:48:34.845Z"},"title":"RCE via OOM corruption","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-416","description":"CWE-416 Use after free","type":"CWE"}]},{"descriptions":[{"lang":"en","cweId":"CWE-755","description":"CWE-755 Improper Handling of Exceptional Conditions","type":"CWE"}]},{"descriptions":[{"lang":"en","cweId":"CWE-824","description":"CWE-824 Access of uninitialized pointer","type":"CWE"}]},{"descriptions":[{"lang":"en","cweId":"CWE-1325","description":"CWE-1325 Improperly controlled sequential memory allocation","type":"CWE"}]},{"descriptions":[{"lang":"en","cweId":"CWE-1419","description":"CWE-1419 Incorrect Initialization of Resource","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-234","descriptions":[{"lang":"en","value":"CAPEC-234 Hijacking a privileged process"}]}],"affected":[{"vendor":"PHP Group","product":"PHP","packageName":"php-src","versions":[{"status":"affected","version":"8.2.*","lessThan":"8.2.35","versionType":"semver"},{"status":"affected","version":"8.3.*","lessThan":"8.3.36","versionType":"semver"},{"status":"affected","version":"8.4.*","lessThan":"8.4.27","versionType":"semver"},{"status":"affected","version":"8.5.*","lessThan":"8.5.12","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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).","supportingMedia":[{"type":"text/html","base64":false,"value":"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).<br>"}]}],"references":[{"url":"https://github.com/php/php-src/security/advisories/GHSA-w8hw-w9fx-j79w","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"CRITICAL","baseScore":9.2,"vectorString":"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"}}],"workarounds":[{"lang":"en","value":"Check the GitHub Security Advisory for mitigation strategies.","supportingMedia":[{"type":"text/html","base64":false,"value":"Check the GitHub Security Advisory for mitigation strategies."}]}],"credits":[{"lang":"en","value":"Ryan at Calif.io","type":"reporter"},{"lang":"en","value":"Wiz","type":"reporter"},{"lang":"en","value":"OpenAI","type":"finder"},{"lang":"en","value":"Arnaud Le Blanc","type":"remediation developer"},{"lang":"en","value":"Ilija Tovilo","type":"remediation developer"},{"lang":"en","value":"Jakub Zelenka","type":"remediation developer"},{"lang":"en","value":"Nora Dossche","type":"remediation developer"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"references":[{"url":"https://www.wiz.io/blog/php2shell-php-rce","tags":["third-party-advisory"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-21T14:34:39.479770Z","id":"CVE-2026-109618","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-21T14:36:24.229Z"}}]}}