CVE-2026-40021
MediumAdvisory
Published 10 Apr 2026In the index since 6 Sept 2026
- Severity
- Medium
- worst across findings
- CVSS
- 5.3
- base score, highest
- EPSS
- 0.007
- 53rd percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 5
- of 17,781 indexed, latest versions
- Container images
- 6
- deployed by those charts
- Fix available
- 1 of 1
- affected package
Apache Log4net: Silent log event loss in XmlLayout and XmlLayoutSchemaLog4J due to unescaped XML 1.0 forbidden characters
Carried by container images the latest versions of 5 of 17,781 indexed charts deploy, on 6 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| log4netnuget | 1.2.15.0, 2.0.8, 2.0.10, 3.1.0 | 3.3.0 | 6 |
- OSV records
- GHSA-4f7c-pmjv-c25w
Charts affected
5 by stars
Container images carrying it
6 by charts deploying them
A fixed version is listed for 1 of the 1 affected package.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| apacheignite/ | d7deab68b8fa | log4net | 3.3.0 | 1 |
| digitsy/ | f91d7f56b55d | log4net | 3.3.0 | 1 |
| gridgain/ | d32d182a0e6a | log4net | 3.3.0 | 1 |
| siscc/ | bb1e9a45b6fa | log4net | 3.3.0 | 1 |
| siscc/ | 00d73f06edcf | log4net | 3.3.0 | 1 |
| siscc/ | 6cf1145566f0 | log4net | 3.3.0 | 1 |