CVE-2026-105244
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: RemoteSyslogAppender silently deletes non-ASCII content
Improper Encoding or Escaping of Output vulnerability in the RemoteSyslogAppender of Apache log4net. Every character outside visible ASCII and space was removed from the record instead of being escaped, so non-ASCII text and control characters such as tabs disappeared without notice. A party whose data reaches a log message could make a distinct value look identical in the record, for example a user name holding a zero-width space logged as admin. Only applications that use RemoteSyslogAppender are affected. This issue affects Apache log4net: from 1.2.12 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) |
|---|---|---|---|---|---|
| 1.2.12 | 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) |
|---|---|---|---|---|---|
| 56a2e146e21ff4737e1ff3ec308810e667873947 | affected | git | 77717061b20d4346b6c0ce6b54643d85fb348bc7 | Unavailable | None listed |