CVE-2026-92464

Executive Summary

CVE-2026-92464 is an Improper Input Validation vulnerability (CWE-20) in Adobe Commerce that can result in arbitrary code execution in the context of the current user. The vulnerability carries a CVSS base score of 9.1 (Critical) and requires high privileges (PR:H) to exploit, but needs no user interaction (UI:N) and has a changed scope (S:C). Organizations running Adobe Commerce — a widely deployed e-commerce platform handling payment, customer, and inventory data — should treat this as a high-severity risk for privileged-account abuse and lateral movement.

Technical Analysis

The NVD description identifies the root cause as an Improper Input Validation vulnerability in Adobe Commerce. CWE-20 is a broad weakness class that describes software failing to validate or incorrectly validating input before it is processed by downstream components. In this case, the consequence is arbitrary code execution in the context of the current user, meaning any code run through this flaw executes with the privileges of the account that triggers it.

The CVSS vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H indicates:

• AV:N (Network) — the vulnerable component is exploitable remotely over a network.
• AC:L (Low) — no special conditions or race windows are required; the attack is repeatable.
• PR:H (High) — the attacker must already possess high privileges, such as an administrative or otherwise privileged account within the Commerce application.
• UI:N (None) — no victim user action is required, so exploitation can proceed autonomously once the privileged foothold exists.
• S:C (Changed) — exploitation can affect resources beyond the security scope of the vulnerable component, elevating the impact beyond the immediately affected module.
• C:H / I:H / A:H — full impact to confidentiality, integrity, and availability.

Combined, these metrics describe a post-authentication or privileged-context flaw where an attacker with an existing high-privilege account can supply crafted input to reach an execution primitive. Because the exact input vector, module, and parameter are not specified in the available description, the precise code-level mechanism cannot be stated without fabrication. At the vulnerability-class level, improper input validation typically manifests as insufficient sanitization of user-supplied data before it is passed to an interpreter, template engine, file operation, or system call — any of which can produce code execution when validation is absent.

The "changed scope" metric is notable: it implies that successful exploitation allows the attacker to cross a trust boundary, potentially reaching components, services, or data outside the originally targeted Commerce application context.

Exploitation Scenarios

No public proof-of-concept, exploit code, or Nuclei template is available for CVE-2026-92464. The following chain is inferred strictly from the NVD description and CVSS metrics at the vulnerability-class level; no specific endpoints, parameters, file paths, or function names are asserted because the provided data does not disclose them.

1. Reconnaissance / target identification. The attacker identifies an internet-facing (AV:N) Adobe Commerce installation. Because exploitation requires high privileges (PR:H), the attacker first needs a privileged account — obtained through credential theft, phishing, re-used admin passwords, or a separate privilege-escalation flaw. The changed-scope metric suggests the attacker may probe beyond the Commerce application boundary once inside.

2. Triggering the input-validation flaw. With a privileged session established, the attacker supplies crafted input to a Commerce function that processes it without adequate validation (CWE-20). No user interaction is required (UI:N), and the attack complexity is low (AC:L), so the malicious input can be delivered programmatically and repeatedly. The specific input surface is not disclosed in available data.

3. Payload / execution method. Improper input validation that leads to arbitrary code execution typically results from untrusted data being passed to a code interpreter, a template/render engine, a deserialization routine, or a system command without sanitization. The attacker's crafted input causes the application to execute attacker-controlled code with the privileges of the current user. Because the scope is changed, the execution impact can extend to adjacent components.

4. Post-exploitation impact. Successful exploitation yields arbitrary code execution with high confidentiality, integrity, and availability impact (C:H/I:H/A:H). In a Commerce context, realistic outcomes include exfiltration of customer and payment data, tampering with orders or pricing, persistence via web-shell or scheduled task, and lateral movement into connected systems given the changed-scope rating.

No exploit-in-the-wild evidence, threat actor attribution, or campaign data is available for this CVE in the provided intelligence.

Impact Assessment

CVE-2026-92464 affects Adobe Commerce and carries a CVSS base score of 9.1 (Critical). The impact subscores are uniformly high: confidentiality, integrity, and availability are all rated High, and the scope is Changed (S:C), meaning exploitation can affect resources beyond the vulnerable component.

Business impact:

• Data breach exposure. Adobe Commerce stores customer PII, order histories, and often payment-related data. Arbitrary code execution with High confidentiality impact enables mass data exfiltration.
• Integrity and fraud risk. High integrity impact allows modification of orders, prices, inventory, and content, enabling financial fraud and supply-chain manipulation.
• Availability disruption. High availability impact means an attacker could disrupt storefront operations, causing direct revenue loss.
• Privileged requirement mitigates mass exploitation. Because PR:H is required, unauthenticated internet-wide exploitation is not possible. The primary risk is to organizations where privileged Commerce accounts are compromised, over-provisioned, or poorly monitored.
• Blast radius. The changed-scope rating means the impact is not confined to the vulnerable Commerce module; connected services, integrations, and backend infrastructure may be reachable.

Likelihood considerations: EPSS has not been scored by FIRST.org for this CVE, no public PoC exists, no Nuclei template was published, and CISA KEV does not list it. Current real-world exploitation likelihood is assessed as lower than an unauthenticated equivalent, but the severity of impact when a privileged foothold exists remains critical.

Detection Guidance

Sigma Rule

title: Suspicious Adobe Commerce Input Validation Abuse Attempt
id: 3f2a9c41-7d6e-4b8a-9c1f-0a2b5e8d4c77
status: experimental
description: Detects anomalous POST requests to Adobe Commerce admin endpoints potentially exercising improper input validation (CVE-2026-92464)
references:
  - https://nvd.nist.gov/vuln/detail/CVE-2026-92464
author: valtersit.com
date: 2026-01-01
logsource:
  category: webserver
  product: apache
detection:
  selection_method:
    cs-method:
      - 'POST'
      - 'PUT'
  selection_uri:
    cs-uri-stem|contains:
      - '/admin'
      - '/index.php/admin'
  selection_payload:
    cs-uri-query|contains:
      - '{{'
      - '${'
      - '<script'
      - '../'
      - 'php://'
  condition: selection_method and selection_uri and selection_payload
falsepositives:
  - Legitimate admin activity containing template or path syntax
level: high
tags:
  - attack.t1190
  - cve.2026.92464

YARA Rule

rule CVE_2026_92464_Adobe_Commerce_Input_Validation
{
    meta:
        description = "Detects indicators of improper input validation abuse targeting Adobe Commerce (CVE-2026-92464)"
        author = "valtersit.com"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2026-92464"
        date = "2026-01-01"
        severity = "critical"

    strings:
        $cve = "CVE-2026-92464" ascii wide nocase
        $magento = "Magento" ascii nocase
        $commerce = "Adobe Commerce" ascii wide nocase
        $exec1 = "system(" ascii
        $exec2 = "eval(" ascii
        $exec3 = "passthru(" ascii
        $exec4 = "shell_exec(" ascii
        $admin = "/admin" ascii nocase

    condition:
        uint16(0) == 0x3C3F or uint16(0) == 0x504B or
        (
            filesize < 5MB and
            any of ($exec*) and
            any of ($magento, $commerce, $admin)
        )
}

Suricata IDS Rule

alert http any any -> any any (msg:"CVE-2026-92464 Possible Adobe Commerce Improper Input Validation Exploit"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/admin"; http.request_body; content:"{{"; nocase; reference:cve,2026-92464; reference:url,nvd.nist.gov/vuln/detail/CVE-2026-92464; classtype:web-application-attack; sid:202692464; rev:1;)

Elastic Detection

sequence by source.ip with maxspan=5m
  [ network where http.request.method == "POST" and
      http.request.uri : ("*admin*" or "*magento*") and
      url.path : "*" and
      user.name : * ]
  [ network where http.request.body.content : ("*eval(*" or "*system(*" or "*php://*" or *"../"*) and
      http.request.uri : ("*admin*" or "*magento*") ]

Splunk SPL Query

index=web sourcetype=access_combined
(method=POST OR method=PUT)
(uri_path="*admin*" OR uri_path="*magento*")
(uri_query="*{{*" OR uri_query="*${*" OR uri_query="*php://*" OR uri_query="*../*")
| stats count min(_time) as first_seen max(_time) as last_seen
        values(uri_path) as paths values(clientip) as src_ips
        by clientip, uri_path, status
| where count > 5
| eval first_seen=strftime(first_seen,"%Y-%m-%d %H:%M:%S"),
       last_seen=strftime(last_seen,"%Y-%m-%d %H:%M:%S")
| sort - count

Wazuh OSSEC Rule

<group name="web,appsec,adobe_commerce,">
  <rule id="2026924" level="12">
    <if_sid>31100</if_sid>
    <id>^POST$</id>
    <url>admin|magento</url>
    <match>\.\./|php://|eval\(|system\(|\{\{</match>
    <description>CVE-2026-92464: Possible Adobe Commerce improper input validation exploitation attempt</description>
    <mitre>
      <id>T1190</id>
    </mitre>
    <group>cve_2026_92464,web_attack,</group>
  </rule>
</group>

Mitigation & Patch Guidance

Patch confidence: 0/4 — UNPATCHED. No patch evidence has been identified from any tracked source. The vendor fix field is N/A and no workaround has been published in the available data. The actions below are defensive measures that reduce exposure while awaiting an official Adobe security update.

1) Immediate mitigations:

• Restrict privileged access. Because PR:H is required, enforce least privilege on all Adobe Commerce administrative roles. Remove standing admin rights; use time-bound, auditable elevation.
• Enforce MFA on all Commerce admin accounts and integrate with SSO where possible.
• Network-restrict the admin panel. Place the admin interface behind a VPN, IP allow-list, or zero-trust access proxy. Do not expose /admin directly to the internet.
• Enable WAF rules targeting improper input validation patterns (template injection syntax, path traversal sequences, interpreter tokens) at the edge and at the application layer. Tune to reduce false positives on legitimate admin traffic.
• Increase logging and monitoring on all admin POST/PUT activity, alerting on anomalous payloads as described in the Detection Guidance section.
• Rotate credentials for privileged Commerce accounts and audit for unauthorized admin account creation.

2) Patch / upgrade steps:

• No patch is currently available. Monitor Adobe's security bulletin page and the Adobe Commerce security center for the official advisory and patched release.
• Subscribe to Adobe Commerce security notifications and the Adobe Product Security Incident Response Team (PSIRT) feed.
• When an update ships, stage and test it in a non-production environment, then deploy on an accelerated timeline given the Critical severity.
• Validate patch application by confirming the affected component version and re-testing the input-validation surface.

3) Long-term hardening:

• Maintain an asset inventory of all Adobe Commerce instances, including version, module, and integration details.
• Adopt a vulnerability management program with continuous scanning and prioritized remediation aligned to CVSS and exploitability.
• Segregate Commerce infrastructure from backend ERP, payment, and customer-data systems to limit changed-scope blast radius.
• Implement egress filtering and application-layer monitoring to detect post-exploitation code execution and data exfiltration.
• Conduct regular privileged-access reviews and red-team exercises simulating a compromised admin account.
• Track CVE-2026-92464 in threat-intelligence platforms and re-assess when EPSS scores, PoCs, or KEV listing status change.

References

1. NVD — CVE-2026-92464: https://nvd.nist.gov/vuln/detail/CVE-2026-92464
2. MITRE CWE-20 — Improper Input Validation: https://cwe.mitre.org/data/definitions/20.html
3. MITRE ATT&CK T1190 — Exploit Public-Facing Application: https://attack.mitre.org/techniques/T1190/
4. Adobe Product Security / Commerce Security Bulletins (monitor for vendor advisory): https://helpx.adobe.com/security.html
5. FIRST.org EPSS (currently unscored for this CVE): https://www.first.org/epss/

Threat actor / exploit-in-the-wild status: No threat actor campaigns, exploit-in-the-wild evidence, public proof-of-concept, or Nuclei template have been identified for CVE-2026-92464 in the provided intelligence. CISA KEV does not list this CVE. Continuous monitoring is recommended given the Critical severity and changed-scope rating.