Exploitation evidence
Known exploited · CISA KEV listed
Added 2026-10-26. Ransomware campaign use: Unknown.
CISA required action: 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.
CISA due date: 2026-10-29. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
PHP Group / PHP
Default status: unaffected
- affected: 8.2.* to < 8.2.35 (semver)
- affected: 8.3.* to < 8.3.36 (semver)
- affected: 8.4.* to < 8.4.27 (semver)
- affected: 8.5.* to < 8.5.12 (semver)
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Reported workarounds: Check the GitHub Security Advisory for mitigation strategies.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- https://github.com/php/php-src/security/advisories/GHSA-w8hw-w9fx-j79w
- https://www.wiz.io/blog/php2shell-php-rce
- https://arcticwolf.com/resources/blog/php2shell-critical-php-vulnerabilities-enable-unauthenticated-remote-code-execution/
- https://php2shell.delftintellab.com
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-109618
- http://www.openwall.com/lists/oss-security/2026/10/21/6
- http://www.openwall.com/lists/oss-security/2026/10/23/5
- http://seclists.org/fulldisclosure/2026/Oct/51
- https://cert-portal.siemens.com/productcert/html/ssa-566512.html
- https://cert-portal.siemens.com/productcert/html/ssa-566435.html
- https://cert-portal.siemens.com/productcert/html/ssa-166980.html
Monitored source mentions
- CERT/CC — VU#763488: Memory corruption vulnerabilities in PHP ↗
- CISA KEV — Linux Kernel Missing Initialization of a Variable Vulnerability ↗
- CISA KEV — PHP Memory Corruption Vulnerability ↗
- Wiz Research — PHP2Shell: AI uncovers critical RCE vulnerabilities affecting 70% of the Internet | Wiz Blog ↗
- Huntress — Rapid Response: php2shell, Leaked Critical PHP Vulnerabilities (CVE-2026-109618 & CVE-2026-109619) | Huntress ↗
Shared CVE identifiers link source mentions; they do not establish that the reports describe the same incident.
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.99999,
"percentile": 0.99999
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.99999,
"percentile": 0.99999
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.99999,
"percentile": 0.99999
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.99999,
"percentile": 0.99999
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.99999,
"percentile": 0.99999
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.99999,
"percentile": 0.99999
}06 Nov 2026, 18:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
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Stored CNA snapshot at this observation.
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}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
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"dateAdded": "2026-10-26",
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"notes": "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-2026-109618",
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