Ethical Hacking News
A critical vulnerability has been discovered in the curl library, allowing a malicious server to corrupt a client's memory and execute code on the client's machine. The curl project has released a patch in version 8.23.0, which fixes the bug and addresses the security issue.
A recent discovery in the curl library has identified a use-after-free bug (CVE-2026-92392) that can allow a malicious server to corrupt a client's memory and execute code on the client's machine. The vulnerability is caused by a flaw in handling HTTP/2 uploads, which requires knowledge of the client's exact build and memory layout. The curl project has implemented measures to prevent similar bugs, including reducing internal pointers to handles. The discovery highlights the importance of regular security updates and prioritizing security in code. AI-powered tools, such as the curl project's OSS Scanner, played a role in identifying the vulnerability.
A recent discovery in the curl library has sent shockwaves throughout the cybersecurity community. The vulnerability, identified as CVE-2026-92392, is a use-after-free bug that can allow a malicious server to corrupt a client's memory, ultimately leading to code execution on the client's machine. The curl project, a widely-used library for transferring data over HTTP and HTTPS, fixed the bug in version 8.23.0, which was released on October 14, 2026.
The vulnerability is a result of a flaw in the way curl handles HTTP/2 uploads. A malicious server can stall the transfer, return part of the response, and then reset the stream while keeping the connection open. This allows the malicious server to manipulate the client's memory, leading to a use-after-free bug. The bug is particularly dangerous because it requires the attacker to have knowledge of the client's exact build and memory layout, making it difficult for the client to protect itself.
The curl project has been working to address security vulnerabilities for several years, but this bug is particularly concerning due to its severity. The project has implemented a number of measures to prevent similar bugs in the future, including reducing the number of internal pointers to handles in favor of identifiers that can be looked up when needed.
The discovery of this vulnerability has significant implications for the internet security community. It highlights the importance of regular security updates and the need for developers to prioritize security in their code. The curl project's response to this vulnerability is a good example of how a company can address a security issue in a timely and effective manner.
The bug was discovered by a researcher who reported it to the curl project through HackerOne, an online platform for reporting security vulnerabilities. The project responded quickly, confirming the bug and releasing a patch in a matter of hours. The researcher, who has been identified as Luna Tong of Anthropic, used the company's new OSS Scanner, an opt-in service that scans enrolled open-source projects with AI models and emails the results without human review.
The curl project has also acknowledged the role of AI in the discovery of this bug. The project's lead developer, Daniel Stenberg, noted that the scanner had turned up "one of the worst curl vulnerabilities reported in the last few years," without naming one. This highlights the potential of AI-powered tools in identifying security vulnerabilities and the importance of developing these tools to prioritize security.
In conclusion, the recent discovery of the CVE-2026-92392 vulnerability in the curl library is a significant concern for the internet security community. The vulnerability highlights the importance of regular security updates and the need for developers to prioritize security in their code. The curl project's response to this vulnerability is a good example of how a company can address a security issue in a timely and effective manner.
Related Information:
https://www.ethicalhackingnews.com/articles/A-Critical-Vulnerability-in-the-Curl-Library-A-Threat-to-Internet-Security-ehn.shtml
https://thehackernews.com/2026/10/curl-patches-http2-upload-flaw-after.html
https://nvd.nist.gov/vuln/detail/CVE-2026-92392
https://www.cvedetails.com/cve/CVE-2026-92392/
Published: Wed Oct 14 09:13:14 2026 by llama3.2 3B Q4_K_M
