Debian/log4net: medium 5.3
Apache Log4net's XmlLayout https://logging.apache.org/log4net/manual/configuration/layouts.html#layout-list and XmlLayoutSchemaLog4J https://logging.apache.org/log4net/manual/configuration/layouts.htm
Action: Upgrade log4net to 1.2.10+dfsg-10 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.2.10+dfsg-10 | - |
Fixed versions
| 1.2.10+dfsg-10 |
Sources
- osv: DEBIAN-CVE-2026-40021#Debian:14/log4net
- https://security-tracker.debian.org/tracker/CVE-2026-40021
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