Ethical Hacking News
A third PHP2Shell vulnerability has emerged, adding another layer of complexity to the ongoing PHP2Shell saga. While the new vulnerability is considered to be of a lower risk than its predecessors, it still poses a threat to web applications and requires prompt attention from users and developers alike.
The PHP2Shell saga has taken a new turn with the emergence of a third vulnerability, CVE-2026-115560, a remote code execution (RCE) flaw. The third vulnerability is deemed to be of a lower risk than its predecessors, and can be mitigated with a configuration setting. A configuration setting can protect users from this vulnerability, and the PHP Security Team has only published an informational advisory. A full advisory and fixed software are expected to be released with the next regular PHP release. Researchers have been exploring this vulnerability, with some publishing proof-of-concept (PoC) exploits, but these may not be representative of real-world scenarios. The emergence of this third PHP2Shell bug highlights the importance of ongoing vigilance and proactive measures in maintaining the security of web applications.
The PHP2Shell saga, which has been unfolding over the past week, has taken an interesting turn with the emergence of a third vulnerability. This latest development has left the cybersecurity community abuzz, as experts weigh the implications of this new threat and how it may impact the already compromised systems. In this article, we will delve into the details of the third PHP2Shell bug, its characteristics, and the measures being taken to mitigate its effects.
In a statement released on Friday, the PHP Foundation announced the existence of a third vulnerability, identified as CVE-2026-115560. This vulnerability, like its predecessors, is a remote code execution (RCE) flaw that could potentially allow attackers to take control of websites or run malicious code on vulnerable systems. However, unlike the first two vulnerabilities that comprise PHP2Shell, this third vulnerability is deemed to be of a lower risk.
According to Elizabeth Barron, executive director of the PHP Foundation, "The issue can be mitigated with a configuration setting. So for the moment the PHP Security Team has only published an informational advisory on the PHP website, explaining exactly this situation." This implies that users can take steps to protect themselves from this vulnerability by setting a specific configuration parameter.
The PHP Foundation has reserved a CVE identifier for the third RCE flaw, and it plans to release a full advisory and fixed software with the next regular PHP release. This suggests that the foundation is taking a measured approach to addressing the vulnerability, one that balances the need for a quick fix with the need to thoroughly test and validate the patch.
Researchers have been actively exploring this vulnerability, with some even publishing proof-of-concept (PoC) exploits online. However, it is essential to note that these PoCs are not necessarily indicative of a widespread attack, as they may not be fully reliable or representative of real-world scenarios. In fact, Charles Carmakal, Chief Technology Officer at Mandiant, observed that "many of these [PoCs] appear to be 'vibe-coded' and are incapable of remote code execution." He noted, however, that some validated PoCs were capable of RCE against default deployments of mod_php but not PHP-FPM.
The emergence of this third PHP2Shell bug serves as a reminder that software vulnerabilities can be complex and multifaceted. While the first two vulnerabilities that comprise PHP2Shell were severe, this third vulnerability, while still concerning, is considered to be of a lower risk. Nevertheless, it highlights the importance of ongoing vigilance and proactive measures in maintaining the security of web applications.
In the coming days and weeks, it is likely that the PHP community will continue to grapple with the implications of this new vulnerability. As the PHP Security Team works to release a patch, users are advised to exercise caution and take steps to protect themselves from this vulnerability. By doing so, they can help mitigate the potential risks associated with this new threat and maintain the security of their web applications.
Related Information:
https://www.ethicalhackingnews.com/articles/A-Third-PHP2Shell-Vulnerability-Emerges-A-New-Layer-of-Complexity-in-the-Ongoing-PHP2Shell-Saga-ehn.shtml
https://www.theregister.com/security/2026/10/23/theres-a-third-php2shell-bug-but-it-wont-get-an-emergency-fix/5305208
Published: Fri Oct 23 16:08:44 2026 by llama3.2 3B Q4_K_M
