CVE-2026-56866
HighAdvisory
Published 8 Oct 2026In the index since 9 Oct 2026
- Severity
- High
- worst across findings
- CVSS
- 7.5
- base score, highest
- EPSS
- 0.003
- 22nd percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 5,263
- of 18,131 indexed, latest versions
- Container images
- 6,077
- deployed by those charts
- Fix available
- 1 of 2
- affected packages
HTTP/1 client connection desynchronization after CONNECT rejection in net/http
Carried by container images the latest versions of 5,263 of 18,131 indexed charts deploy, on 6,077 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| stdlibgolang | go1.13, go1.13.1, go1.13.3, go1.13.4+209 more | 1.26.9 | 6,077 |
| golang-1.19deb | 1.19.8-2 | no fix listed | 1 |
- OSV records
- DEBIAN-CVE-2026-56866GO-2026-6605
- Trending
- Rank 10 in indexed charts, since 9 Oct 2026. See the ranking →
Charts affected
5,263 by stars
| Chart | Latest | Affected images | Radar Score |
|---|
Container images carrying it
6,077 by charts deploying them
A fixed version is listed for 1 of the 2 affected packages.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| kubeflow/ | dabb76dbda29 | stdlib | 1.26.9 | 1 |
| kubeflow/ | ff847e2b6af0 | stdlib | 1.26.9 | 1 |
| kubegems/ | eaee03055329 | stdlib | 1.26.9 | 1 |
| kubegems/ | f3c492a938ad | stdlib | 1.26.9 | 1 |
| kubegems/ | 7c93c84b2055 | stdlib | 1.26.9 | 1 |
| kubegems/ | 8905c9dbbb5d | stdlib | 1.26.9 | 1 |
| kubegems/ | cc67357beeeb | stdlib | 1.26.9 | 1 |
| kubegems/ | c3b4be9a54f5 | stdlib | 1.26.9 | 1 |
| kubegems/ | 941f557ed1ee | stdlib | 1.26.9 | 1 |
| kubegems/ | 19cb195b9a50 | stdlib | 1.26.9 | 1 |
| kubegems/ | 870ee3a77add | stdlib | 1.26.9 | 1 |
| kubegreen/ | 2dc0f0a6034c | stdlib | 1.26.9 | 1 |
| kubemod/ | 1f8154f7e80c | stdlib | 1.26.9 | 1 |
| kubemod/ | cadca39288ad | stdlib | 1.26.9 | 1 |
| kubemod/ | 028347c9fa77 | stdlib | 1.26.9 | 1 |
| kubeoperator/ | be8f0d624640 | stdlib | 1.26.9 | 1 |
| kubeovn/ | 6722b54eb5c0 | stdlib | 1.26.9 | 1 |
| kuberay/ | 4e6ac8a3a2c4 | stdlib | 1.26.9 | 1 |
| kubernetesui/ | 290bebc3cd96 | stdlib | 1.26.9 | 1 |
| kubernetesui/ | 2e500d29e9d5 | stdlib | 1.26.9 | 1 |
| kubernetesui/ | 60595892c2cf | stdlib | 1.26.9 | 1 |
| kubernetesui/ | 07135c09e9ff | stdlib | 1.26.9 | 1 |
| kubernetesui/ | 7747d363c9fe | stdlib | 1.26.9 | 1 |
| kubernetesui/ | 4445b31a2c25 | stdlib | 1.26.9 | 1 |
| kubernetesui/ | 76049887f07a | stdlib | 1.26.9 | 1 |
| kubesec/ | 6735b7f3d1c8 | stdlib | 1.26.9 | 1 |
| kubesec/ | c0f3b0673578 | stdlib | 1.26.9 | 1 |
| kubeshark/ | 0532936678f8 | stdlib | 1.26.9 | 1 |
| kubeshark/ | 1f3e121224f8 | stdlib | 1.26.9 | 1 |
| kubeshop/ | e209888ede02 | stdlib | 1.26.9 | 1 |
| kubeshop/ | 866827c379ae | stdlib | 1.26.9 | 1 |
| kubeshop/ | 8b5bfd57a3ce | stdlib | 1.26.9 | 1 |
| kubeshop/ | 126c713cf7d8 | stdlib | 1.26.9 | 1 |
| kubeshop/ | 3b4f8345ca5c | stdlib | 1.26.9 | 1 |
| kubeshop/ | 0ad97f07a78b | stdlib | 1.26.9 | 1 |
| kubeshop/ | e97dc620d9b4 | stdlib | 1.26.9 | 1 |
| kubeshop/ | 5011b74081fa | stdlib | 1.26.9 | 1 |
| kubeshop/ | 094186b19698 | stdlib | 1.26.9 | 1 |
| kubeshop/ | d8e1af6aca99 | stdlib | 1.26.9 | 1 |
| kubeshop/ | def0d0f0d4ab | stdlib | 1.26.9 | 1 |
| kubeshop/ | 73d7e3a2db43 | stdlib | 1.26.9 | 1 |
| kubeskoop/ | 9031d9f74832 | stdlib | 1.26.9 | 1 |
| kubeskoop/ | 37a3eb73325d | stdlib | 1.26.9 | 1 |
| kubesphere/ | b87db3c57cb3 | stdlib | 1.26.9 | 1 |
| kubesphere/ | 702df77228c6 | stdlib | 1.26.9 | 1 |
| kubesphere/ | 29681958f220 | stdlib | 1.26.9 | 1 |
| kubesphere/ | 49b445b1b732 | stdlib | 1.26.9 | 1 |
| kubesphere/ | b5b665c4672c | stdlib | 1.26.9 | 1 |
| kubesphere/ | 9a18a16c7b87 | stdlib | 1.26.9 | 1 |
| kubesphere/ | eac8f273a9b6 | stdlib | 1.26.9 | 1 |