CVE-2026-78625 Overview
CVE-2026-78625 is a code injection vulnerability [CWE-94] in the Okta Access Gateway. The product fails to sanitize dashboard application label values before writing them into generated PHP configuration files. The Access Gateway automatically includes the generated file during authentication requests. As a result, attacker-controlled label content executes with the privileges of the web server process.
Exploitation requires local access and high privileges on the administrative interface, which limits the attacker population to authenticated administrators. Once conditions are met, the flaw permits arbitrary PHP execution on the appliance.
Critical Impact
Authenticated administrators can inject PHP code through dashboard label fields, achieving code execution as the web server user on the Okta Access Gateway appliance.
Affected Products
- Okta Access Gateway (dashboard site configuration component)
- Refer to the Okta Security Advisory CVE-2026-78625 for the affected version range
Discovery Timeline
- 2026-09-08 - CVE-2026-78625 published to NVD
- 2026-09-10 - Last updated in NVD database
Technical Details for CVE-2026-78625
Vulnerability Analysis
The Okta Access Gateway generates PHP configuration files that reflect dashboard state, including application labels defined by administrators. The generator writes these label strings directly into PHP source without escaping quotes, PHP tags, or metacharacters. The Access Gateway then includes the generated file during authentication flows.
When a request that triggers dashboard rendering reaches the appliance, the PHP interpreter parses and executes the injected content. Attackers gain command execution within the security boundary of the web server process, which typically has access to session data, backend configuration, and network paths into protected upstream applications.
Root Cause
The root cause is improper control of code generation [CWE-94]. The dashboard label field is treated as trusted data and concatenated into PHP source. No output encoding, allowlist validation, or structured serialization separates administrator input from the surrounding code context.
Attack Vector
An attacker with administrative access to the Access Gateway management interface edits a dashboard application and supplies a label containing PHP syntax. The appliance regenerates the configuration file and persists the tainted content. On the next authentication request that includes the file, the injected PHP executes. The attack vector is local and requires high privileges, but no user interaction beyond triggering an authentication flow.
No verified public exploit is available. See the Okta Security Advisory for vendor-supplied technical detail.
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Stop Exploit AttemptsDetection Methods for CVE-2026-78625
Indicators of Compromise
- Unexpected PHP syntax, tags (<?php), or function calls (system, exec, passthru, eval) inside generated dashboard configuration files on the Access Gateway.
- Dashboard application labels containing quotes, semicolons, or backticks that do not match legitimate administrative naming conventions.
- Web server processes on the Access Gateway spawning child processes such as shells, curl, or wget.
Detection Strategies
- Compare generated PHP configuration files against a known-good baseline after each administrative change.
- Audit Okta Access Gateway administrator activity logs for dashboard label modifications, especially entries containing non-alphanumeric characters.
- Alert on outbound network connections initiated by the Access Gateway web server process to unexpected destinations.
Monitoring Recommendations
- Forward Access Gateway audit logs and web server process telemetry to a centralized analytics platform for correlation.
- Monitor file integrity on directories that hold generated PHP configuration includes.
- Track administrative session origins and flag console logins from new IP ranges or off-hours activity.
How to Mitigate CVE-2026-78625
Immediate Actions Required
- Apply the fixed Okta Access Gateway release identified in the vendor advisory as soon as it is available in your update channel.
- Review all existing dashboard application labels and remove any values containing PHP syntax or unusual characters.
- Rotate credentials and session secrets stored on the appliance if tampering is suspected.
Patch Information
Okta has published guidance in the Okta Security Advisory CVE-2026-78625. Follow the advisory to identify the fixed version for your deployment and schedule an upgrade window.
Workarounds
- Restrict Access Gateway administrative console access to a small set of trusted operators and network segments.
- Enforce multi-factor authentication on all administrator accounts that can modify dashboard applications.
- Enable change control review of dashboard label edits until the patched version is deployed.
# Example: restrict admin console exposure with host firewall rules
iptables -A INPUT -p tcp --dport 443 -s <admin_mgmt_subnet> -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
