SSRF Vulnerability in Instant Image Generator ai-image

Executive Summary

This vulnerability is a Server-Side Request Forgery (SSRF) issue found in the bdthemes Instant Image Generator ai-image plugin. It allows an attacker to make the server perform unauthorized requests on their behalf. The affected versions are from the initial release up to and including version 2.1.4.

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Detection Guidance

Detecting an SSRF vulnerability like CVE-2026-57413 in the Instant Image Generator plugin (versions <= 2.1.4) on your WordPress system involves checking for signs of unauthorized outbound requests or verifying the plugin version. Below are some methods to detect this vulnerability:

• Check the installed version of the Instant Image Generator plugin. If it is 2.1.4 or below, the system is vulnerable. You can verify the version via the WordPress admin dashboard under 'Plugins' or by running the following command in the WordPress root directory:
• `grep -r "Version:" wp-content/plugins/ai-image/ai-image.php`
• Monitor outbound network traffic from your WordPress server for unexpected requests to arbitrary domains. Tools like Wireshark, tcpdump, or network firewalls can help detect suspicious activity. Example command to capture outbound HTTP traffic:
• `tcpdump -i eth0 -A 'tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)'`
• Review WordPress logs for unusual activity, such as requests to internal or external services that are not part of normal operations. Check the access logs for unexpected URLs or parameters.
• Use a vulnerability scanner like WPScan to detect outdated or vulnerable plugins. Example command:
• `wpscan --url your-wordpress-site.com --enumerate vp`

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Impact Analysis

The SSRF vulnerability can allow an attacker to make the server send requests to internal or external systems that the attacker normally could not access. This can lead to information disclosure, unauthorized actions, or further exploitation of internal services. The CVSS score of 6.4 indicates a medium severity with potential impact on confidentiality and integrity.

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Compliance Impact

A Server-Side Request Forgery (SSRF) vulnerability like CVE-2026-57413 can have significant implications for compliance with standards and regulations such as GDPR and HIPAA. SSRF allows attackers to make unauthorized requests from the vulnerable server to internal or external systems, potentially exposing sensitive data.

• GDPR: If the SSRF vulnerability leads to unauthorized access to personal data (e.g., customer records, user information), it may violate GDPR's data protection principles (Article 5) and requirements for data security (Article 32). Organizations could face fines or penalties if they fail to implement adequate security measures to prevent such breaches.
• HIPAA: For organizations handling protected health information (PHI), an SSRF attack could result in unauthorized access to PHI, violating the HIPAA Security Rule (45 CFR Part 164, Subpart C). This could lead to non-compliance penalties, especially if the breach is not reported or mitigated promptly.

Additionally, the vulnerability's classification under OWASP Top 10 (A10: Server-Side Request Forgery) underscores its potential to undermine security controls, which may be required by frameworks like ISO 27001 or NIST SP 800-53. Failure to address such vulnerabilities could result in non-compliance with contractual or regulatory obligations.

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Mitigation Strategies

To mitigate CVE-2026-57413, follow these immediate steps:

• Update the Instant Image Generator plugin to version 2.1.5 or later, as this version contains the patch for the SSRF vulnerability. You can update the plugin via the WordPress admin dashboard or by downloading the latest version from the official plugin repository.
• If updating is not immediately possible, apply the mitigation rule provided by Patchstack to block attacks until the plugin can be updated. This may involve adding custom firewall rules or using a Web Application Firewall (WAF) to filter malicious requests.
• Restrict outbound network traffic from your WordPress server to only trusted domains and services. This can be done using network-level firewalls or host-based rules to limit the potential impact of SSRF attacks.
• Monitor your WordPress site for signs of exploitation, such as unusual outbound requests or unauthorized access attempts. Enable logging for all outbound requests made by the plugin.
• Consider disabling the Instant Image Generator plugin temporarily if the update cannot be applied immediately and no mitigation rule is available. This will prevent exploitation until a patch can be applied.

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