Tag
#XML Parsing
Critical Nokogiri Vulnerability: CVE-2025-71407
A critical vulnerability (CVE-2025-71407) with a CVSS score of 9.8 affects Nokogiri, a popular Ruby gem for parsing XML and HTML. The vulnerability involves a stack buffer overflow and a use-after-free issue in libxml2, which can lead to denial of service or potential code execution. Affected versions are Nokogiri before 1.18.3. Immediate patching is recommended.
Understanding and Defending Against CVE-2026-32327: A Stack Recursion Attack in APR-util
CVE-2026-32327 is a critical vulnerability in APR-util version 1.6.3 and earlier, allowing a stack recursion attack when parsing XML from untrusted sources using the apr_xml_quote_elem() function. This vulnerability has a CVSS score of 9.1 and can lead to high confidentiality and availability impacts. Users are recommended to upgrade to version 1.6.4 to fix this issue.
Understanding and Defending Against Integer Overflow Vulnerability in libexpat
This educational analysis delves into CVE-2026-56407, an integer overflow vulnerability in libexpat before version 2.8.2. The vulnerability, which has a CVSS score of 6.9, is caused by an integer overflow in the doProlog function related to storeEntityValue and entity textLen. We will explore the root cause, attack surface, exploitation mechanics, real-world impact, detection strategies, and defensive measures to protect against this threat.