CVE-2021-21295
MediumAdvisory
Published 9 Mar 2021In the index since 6 Sept 2026
- Severity
- Medium
- worst across findings
- CVSS
- 5.9
- base score, highest
- EPSS
- 0.189
- 97th percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 134
- of 17,781 indexed, latest versions
- Container images
- 138
- deployed by those charts
- Fix available
- 1 of 2
- affected packages
Possible request smuggling in HTTP/2 due missing validation
Carried by container images the latest versions of 134 of 17,781 indexed charts deploy, on 138 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| netty-codec-http2maven | 4.1.12.Final, 4.1.19.Final, 4.1.22.Final, 4.1.24.Final+17 more | 4.1.60.Final | 81 |
| nettymaven | 3.2.10.Final, 3.6.1.Final, 3.6.2.Final, 3.6.6.Final+6 more | no fix listed | 66 |
- OSV records
- GHSA-wm47-8v5p-wjpj
- Also known as
- BIT-zookeeper-2021-21295
Charts affected
134 by stars
Container images carrying it
138 by charts deploying them
A fixed version is listed for 1 of the 2 affected packages.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| gradiant/ | 3b28784ba41f | netty | no fix listed | 7 |
| bde2020/ | 620267768985 | netty | no fix listed | 4 |
| mastercloudapps/ | 40a950b311b2 | netty-codec-http2 | 4.1.60.Final | 4 |
| oscarsotosanchez/ | d4d020e9f272 | netty-codec-http2 | 4.1.60.Final | 4 |
| apache/ | e8b7c4ddd069 | netty-codec-http2 | 4.1.60.Final | 3 |
| apache/ | 0bd3b25c4be4 | netty-codec-http2 | 4.1.60.Final | 3 |
| codeurjc/ | 800cf520c245 | netty-codec-http2 | 4.1.60.Final | 3 |
| gchq/ | 5ec58edbb2db | netty | no fix listed | 3 |
| amazon/ | 2acfa1dcc5f8 | netty-codec-http2 | 4.1.60.Final | 2 |
| apache/ | 0116fb802786 | netty | no fix listed | 2 |
| apachepulsar/ | b341ef76a852 | netty-codec-http2 | 4.1.60.Final | 2 |
| danisla/ | 255ba2dd739b | netty | no fix listed | 2 |
| geoservercloud/ | 756559ee788a | netty-codec-http2 | 4.1.60.Final | 2 |
| geoservercloud/ | 99540eef78ad | netty-codec-http2 | 4.1.60.Final | 2 |
| geoservercloud/ | 5c254c53a357 | netty-codec-http2 | 4.1.60.Final | 2 |
| geoservercloud/ | c687b1cbc891 | netty-codec-http2 | 4.1.60.Final | 2 |
| geoservercloud/ | 5288f320cf36 | netty-codec-http2 | 4.1.60.Final | 2 |
| geoservercloud/ | a30a60ac6cd0 | netty-codec-http2 | 4.1.60.Final | 2 |
| gradiant/ | aae4f8a21f8b | netty | no fix listed | 2 |
| gradiant/ | c33d53913869 | netty | no fix listed | 2 |
| gradiant/ | 97657d56e927 | netty | no fix listed | 2 |
| nacos/ | dcf04549c6d7 | netty-codec-http2 | 4.1.60.Final | 2 |
| opensearchproject/ | 967d7f57f72f | netty-codec-http2 | 4.1.60.Final | 2 |
| wurstmeister/ | 7a7fd44a7210 | netty | no fix listed | 2 |
| 5200710/ | 092d3088a5fb | netty | no fix listed | 1 |
| 5200710/ | e34ab066d2ed | netty | no fix listed | 1 |
| adagber/ | e5c1ed097752 | netty-codec-http2 | 4.1.60.Final | 1 |
| amartinm82/ | 1184353ff57b | netty-codec-http2 | 4.1.60.Final | 1 |
| apache/ | 0cef139b6bf1 | netty | no fix listed | 1 |
| apache/ | af361b20bec0 | netty | no fix listed | 1 |
| apacheignite/ | d7deab68b8fa | netty | no fix listed | 1 |
| apache/ | afa47bf1692a | netty-codec-http2 | 4.1.60.Final | 1 |
| apache/ | 090b7f87ec7f | netty-codec-http2 | 4.1.60.Final | 1 |
| apache/ | 974efa2f21da | netty-codec-http2 | 4.1.60.Final | 1 |
| apachepinot/ | 0018bb04ced7 | netty | no fix listed | 1 |
| apachepulsar/ | 3b262ab7a7d9 | netty | no fix listed | 1 |
| apachepulsar/ | 4db6ff0b4045 | netty netty-codec-http2 | no fix listed 4.1.60.Final | 1 |
| apachepulsar/ | d056c89b7131 | netty netty-codec-http2 | no fix listed 4.1.60.Final | 1 |
| apachepulsar/ | d538416d5afe | netty netty-codec-http2 | no fix listed 4.1.60.Final | 1 |
| apache/ | e2be712fc4f4 | netty-codec-http2 | 4.1.60.Final | 1 |
| apache/ | 1bd5756f6273 | netty-codec-http2 | 4.1.60.Final | 1 |
| apache/ | 641237e0299b | netty netty-codec-http2 | no fix listed 4.1.60.Final | 1 |
| apicurio/ | 44eeddd3562c | netty-codec-http2 | 4.1.60.Final | 1 |
| apicurio/ | a97d67487532 | netty-codec-http2 | 4.1.60.Final | 1 |
| arturisimo/ | fff9de644941 | netty-codec-http2 | 4.1.60.Final | 1 |
| assistiot/ | db9361dad79b | netty | no fix listed | 1 |
| assistiot/ | ba1d85ec3739 | netty-codec-http2 | 4.1.60.Final | 1 |
| assistiot/ | ea254b6d8a31 | netty netty-codec-http2 | no fix listed 4.1.60.Final | 1 |
| atomix/ | 7738ff4f5c63 | netty-codec-http2 | 4.1.60.Final | 1 |
| bivas/ | 05545994f806 | netty | no fix listed | 1 |