CVE-2026-28117 is a high-severity vulnerability identified in the axiomthemes smart SEO plugin. This vulnerability allows for PHP Local File Inclusion, specifically due to improper control of filename in include or require statements. The potential impact is significant as it can expose sensitive files on the server, leading to unauthorized access and exploitation of the application.
With a CVSS score of 8.1, this vulnerability falls within the high severity category. The attack vector is through the network, and the complexity is rated as high, meaning that successful exploitation requires a certain level of skill or knowledge. Organizations using versions of smart SEO that are 2.9 or lower are particularly at risk.
Risk to organizations includes potential data exposure and integrity issues. Attackers may leverage this vulnerability to include arbitrary files, which can lead to further attacks or system compromise. Therefore, organizations should prioritize patching immediately.
The vulnerability was published on March 5, 2026, and its current status is deferred. Thus, organizations should keep a close eye on updates related to this CVE and take proactive measures to secure their systems.
Vulnerability Details
The vulnerability is categorized under CWE-98, which indicates improper control of filenames. The affected product is the axiomthemes smart SEO plugin, specifically versions up to and including 2.9. The impact on confidentiality, integrity, and availability is rated as high.
For further details, you can view the original advisory from Patchstack regarding this vulnerability.
Technical Analysis
The root cause of this vulnerability stems from the plugin's failure to validate and sanitize input parameters for include or require statements. This oversight allows attackers to manipulate the filename parameter and include arbitrary files from the server, leading to potential data leakage or remote code execution.
The attack vector is through the network, with high attack complexity, meaning that an attacker needs to have a good understanding of the system to exploit it. No user interaction is required for exploitation, which increases the risk profile of this vulnerability.
Risk & Impact Analysis
The potential blast radius of this vulnerability includes any organization using the affected versions of the smart SEO plugin. Given that the attack can be executed remotely without user interaction, the risk of exploitation is elevated.
Organizations should assess their exposure based on the CVSS score of 8.1 and take immediate action to patch the vulnerability, as it falls under high severity. The urgency for remediation is critical, given the potential for data exposure and system compromise.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of the axiomthemes smart SEO plugin up to and including version 2.9. Organizations using earlier versions should prioritize an update to mitigate the risks associated with this vulnerability.
Mitigation & Remediation
Organizations should implement the following mitigation strategies: apply the relevant patches or updates for the smart SEO plugin, specifically upgrading to a version that addresses this vulnerability. If immediate patching is not feasible, consider implementing configuration hardening practices to reduce exposure, such as restricting file access and validating input parameters.
For more comprehensive security, organizations may benefit from conducting regular security assessments. Engaging in application security assessments and utilizing continuous security testing can help identify vulnerabilities proactively.
Detection Guidance
To detect potential exploitation attempts, organizations should monitor logs for unusual file access patterns and validate any remote file inclusion requests. Additionally, behavioral anomalies related to file system changes or unauthorized access attempts should be flagged for further investigation.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-28117 lies in its representation of the ongoing risks associated with improper input validation in web applications. This vulnerability highlights the necessity for developers to adopt secure coding practices, particularly in PHP applications where file management is involved.
Organizations should learn from this incident by implementing strict input validation and sanitization measures across their development lifecycle. For detailed guidance on best practices, consider reviewing the secure coding practices to mitigate similar threats in the future.
Furthermore, organizations should stay updated on emerging trends in cyber threats and adapt their security measures accordingly. For ongoing insights into potential threats, organizations can benefit from resources such as vulnerability exposure severity trends and regular threat intelligence reports.
In conclusion, organizations managing PHP applications must ensure robust security practices to counter vulnerabilities like CVE-2026-28117 and maintain the integrity of their systems.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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