GHSA-r886-mf8r-26c7MediumCVSS 5.3
Improper Handling of Exceptional Conditions vulnerability in the aspnet-request pattern converter...
🔗 CVE IDs covered (1)
📋 Description
Improper Handling of Exceptional Conditions vulnerability in the aspnet-request pattern converter of Apache log4net.
Reading request parameters triggers ASP.NET request validation, so a request carrying content such as markup made the layout throw and the appender discarded the whole event. A sender could suppress the log record of their own request. Only applications on ASP.NET for .NET Framework whose layout uses %aspnet-request are affected.
This issue affects Apache log4net: from 1.2.11 before 3.5.0.
Users are recommended to upgrade to version 3.5.0, which fixes the issue.
🔗 References (6)
- https://nvd.nist.gov/vuln/detail/CVE-2026-105242
- https://github.com/apache/logging-log4net/pull/316
- https://github.com/apache/logging-log4net/commit/145203420c579a703008b4b723b6a080757f4964
- https://lists.apache.org/thread.html/zg6dbqm4ztm7j3c21nfsqj0yxm5yrpdx
- http://www.openwall.com/lists/oss-security/2026/10/07/16
- https://github.com/advisories/GHSA-r886-mf8r-26c7