CVE-2026-105242
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Apache log4net: Request validation failure drops the event in the aspnet-request converter
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Apache log4net
- Vendor
- Apache Software Foundation
- Product
- Apache log4net
- Platforms
- Unknown
- Default status
unaffected- Package
- log4net
- Package collection
- https://nuget.org/packages
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 1.2.11 | affected | semver | 3.5.0 | Unavailable | None listed |
Apache log4net
- Vendor
- Apache Software Foundation
- Product
- Apache log4net
- Platforms
- Unknown
- Default status
unaffected- Package
- log4net
- Package collection
- https://nuget.org/packages
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 243f1e9f3ee235955bade4b4fe664a903378719a | affected | git | 145203420c579a703008b4b723b6a080757f4964 | Unavailable | None listed |