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
- 5,377
- of 18,104 indexed, latest versions
- Container images
- 6,223
- 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 5,377 of 18,104 indexed charts deploy, on 6,223 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| stdlibgolang | go1.13, go1.13.1, go1.13.3, go1.13.4+212 more | 1.26.9 | 6,223 |
| golang-1.19deb | 1.19.8-2 | no fix listed | 1 |
- OSV records
- DEBIAN-CVE-2026-56866GO-2026-6605
- Trending
- Rank 8 in indexed charts, since 9 Oct 2026. See the ranking →
Charts affected
5,377 by stars
| Chart | Latest | Affected images | Radar Score |
|---|---|---|---|
| prometheus-blackbox-exporterkubegems | 7.1.3 | 1 of 1See more | 2,530 |
| volcanokubegems | 1.12.1 | 3 of 3See more | 6,685 |
| xpai-schedulerkubegems | 1.12.1 | 1 of 2See more | 3,206 |
| gptchat-api-feishubotkubegemsapp | 0.1.1 | 3 of 3See more | 12,055 |
| keycloak-operatorkubehippie-keycloak-operatorVerified publisher | 1.8.1 | 1 of 1See more | 228 |
| stackit-operatorkubehippie-stackit-operator | 1.2.1 | 1 of 1See more | 208 |
| kube-insightkube-insight | 0.1.3 | 1 of 1See more | 762 |
| kubeintellectkubeintellectVerified publisher | 2.6.0 | 2 of 2See more | 2,957 |
| kubelet-summary-exporterkubelet-summary-exporter | 1.0.0 | 1 of 1See more | 1,834 |
| log-generatorkube-loggingVerified publisher | 0.6.0 | 1 of 1See more | 1,981 |
| logging-demokube-loggingVerified publisher | 4.0.3 | 1 of 1See more | 1,926 |
| log-socketkube-loggingVerified publisher | 0.1.2 | 1 of 1See more | 2,083 |
| kubemacpoolkubemacpoolVerified publisher | 0.3.0 | 1 of 1See more | 2,351 |
| kube-netlagkube-netlagVerified publisher | 1.1.0 | 1 of 1See more | 2,071 |
| kube-node-readykube-node-ready | 0.5.0 | 1 of 1See more | 1,001 |
| kubensynckubensync | 0.14.1 | 1 of 1See more | 215 |
| apm-serverkube-opsVerified publisher | 0.1.2 | 1 of 1See more | 8,436 |
| lokikube-opsVerified publisher | 1.7.3 | 1 of 1See more | 3,880 |
| promtailkube-opsVerified publisher | 1.5.1 | 1 of 2See more | 5,748 |
| kube-ovnkube-ovn-test | 1.14.0 | 1 of 1See more | 6,096 |
| kuberay-apiserverkuberay-operator | 1.7.1 | 2 of 2See more | 778 |
| kuberecordkuberecordVerified publisher | 0.5.0 | 1 of 1See more | 446 |
| kubereportkubereport | 1.1.0 | 1 of 1See more | 1,752 |
| adguard-homekubernetes-homelab-helm-chartsVerified publisher | 0.1.2 | 1 of 1See more | 1,064 |
| cloudflaredkubernetes-homelab-helm-chartsVerified publisher | 0.1.1 | 1 of 1See more | 2,044 |
| firefly-iiikubernetes-homelab-helm-chartsVerified publisher | 0.1.3 | 1 of 3See more | 5,371 |
| ghostkubernetes-homelab-helm-chartsVerified publisher | 0.2.3 | 2 of 2See more | 4,197 |
| navidromekubernetes-homelab-helm-chartsVerified publisher | 0.1.0 | 1 of 1See more | 1,335 |
| pocket-idkubernetes-homelab-helm-chartsVerified publisher | 0.1.0 | 1 of 1See more | 2,018 |
| portfolio-trackerkubernetes-homelab-helm-chartsVerified publisher | 0.1.0 | 1 of 3See more | 1,982 |
| qbittorrent-exporterkubernetes-homelab-helm-chartsVerified publisher | 0.1.0 | 1 of 1See more | 675 |
| scrutinykubernetes-homelab-helm-chartsVerified publisher | 0.2.2 | 2 of 3See more | 6,963 |
| syncthingkubernetes-homelab-helm-chartsVerified publisher | 0.1.0 | 1 of 1See more | 1,647 |
| tor-proxykubernetes-homelab-helm-chartsVerified publisher | 0.1.2 | 1 of 1See more | 1,891 |
| umamikubernetes-homelab-helm-chartsVerified publisher | 0.1.0 | 1 of 3See more | 2,939 |
| uptime-kumakubernetes-homelab-helm-chartsVerified publisher | 0.1.2 | 1 of 1See more | 7,948 |
| kubernetes-netskope-publisherkubernetes-netskope-publisherVerified publisher | 1.5.0 | 1 of 2See more | 42,141 |
| kubernetes-nmstatekubernetes-nmstateVerified publisher | 0.87.0 | 1 of 1See more | 846 |
| brudi-operatorkubernetes-replicator | 0.2.3 | 1 of 1See more | 4,399 |
| harbor-operatorkubernetes-replicator | 1.6.3 | 1 of 1See more | 1,819 |
| kube-httpcachekubernetes-replicator | 0.9.1 | 1 of 1See more | 5,469 |
| kubernetes-secret-generatorkubernetes-replicator | 3.4.1 | 1 of 1See more | 1,400 |
| servicegatewaykubernetes-replicator | 2.3.3 | 1 of 1See more | 1,270 |
| kubernetesweeklykubernetesweekly | 2.1.0 | 1 of 1See more | 2,524 |
| kube-secrets-exporterkube-secrets-exporter | 0.1.0 | 1 of 1See more | 1,112 |
| api-serverkubeshop | 0.11.16 | 1 of 2See more | 3,396 |
| kusk-gatewaykubeshop | 0.0.65 | 1 of 2See more | 2,457 |
| kusk-gateway-apikubeshop | 0.1.28 | 2 of 2See more | 3,949 |
| testkube-apikubeshop | 2.1.162 | 1 of 2See more | 2,203 |
| testkube-logskubeshop | 0.2.2 | 1 of 1See more | 2,046 |
Container images carrying it
6,223 by charts deploying them
A fixed version is listed for 1 of the 2 affected packages.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| prom/ | 8176adea328e | stdlib | 1.26.9 | 2 |
| prom/ | a67e5e402ff5 | stdlib | 1.26.9 | 2 |
| prom/ | d43417c260e5 | stdlib | 1.26.9 | 2 |
| prom/ | e4ca62c0d62f | stdlib | 1.26.9 | 2 |
| prom/ | c0d39b8d4cfe | stdlib | 1.26.9 | 2 |
| qmcgaw/ | 3e2aa558946b | stdlib | 1.26.9 | 2 |
| rajnandan1/ | 30407afca731 | stdlib | 1.26.9 | 2 |
| rancher/ | cfc3c7284882 | stdlib | 1.26.9 | 2 |
| rancher/ | 9380f5dbae9a | stdlib | 1.26.9 | 2 |
| rancher/ | 12889bbcd1e8 | stdlib | 1.26.9 | 2 |
| rancher/ | 06c7a7a97727 | stdlib | 1.26.9 | 2 |
| rancher/ | 34ff0847cc47 | stdlib | 1.26.9 | 2 |
| rancher/ | 9bebefa0b908 | stdlib | 1.26.9 | 2 |
| rclone/ | 74c51b8817e5 | stdlib | 1.26.9 | 2 |
| ribbybibby/ | 718abe7f5e79 | stdlib | 1.26.9 | 2 |
| rookout/ | 4451a6f6b8ec | stdlib | 1.26.9 | 2 |
| rookout/ | 51c0fce64467 | stdlib | 1.26.9 | 2 |
| rotationalio/ | 0fc322d2dfc5 | stdlib | 1.26.9 | 2 |
| rss3/ | dae8a5bdd7a6 | stdlib | 1.26.9 | 2 |
| rss3/ | a4059dd32c48 | stdlib | 1.26.9 | 2 |
| scaleway/ | dcc14608d000 | stdlib | 1.26.9 | 2 |
| seafileltd/ | d0c66e4621bd | stdlib | 1.26.9 | 2 |
| shlinkio/ | 844e1f2b6455 | stdlib | 1.26.9 | 2 |
| sikalabs/ | 5f49bf889a64 | stdlib | 1.26.9 | 2 |
| squareup/ | 70f4cf270425 | stdlib | 1.26.9 | 2 |
| starrocks/ | 8c20435a7579 | stdlib | 1.26.9 | 2 |
| statping/ | e874da513a5c | stdlib | 1.26.9 | 2 |
| streamnative/ | 0e6d7aa3ef32 | stdlib | 1.26.9 | 2 |
| supporttools/ | f4f775dd43b9 | stdlib | 1.26.9 | 2 |
| syncthing/ | 775c4aac4862 | stdlib | 1.26.9 | 2 |
| taigaio/ | 4beed8f62c9f | stdlib | 1.26.9 | 2 |
| taigaio/ | fd4568a97a59 | stdlib | 1.26.9 | 2 |
| temporalio/ | 35034611d981 | stdlib | 1.26.9 | 2 |
| temporalio/ | a9f84fb9a374 | stdlib | 1.26.9 | 2 |
| temporalio/ | c0a44c26397b | stdlib | 1.26.9 | 2 |
| temporalio/ | c3e752127759 | stdlib | 1.26.9 | 2 |
| temporalio/ | e26758f5a1bf | stdlib | 1.26.9 | 2 |
| temporalio/ | af9c9349708f | stdlib | 1.26.9 | 2 |
| testinprod/ | 0a125bd77a2d | stdlib | 1.26.9 | 2 |
| thanosio/ | cf3e9b292e43 | stdlib | 1.26.9 | 2 |
| thesisrobot/ | 89ae07e787ca | stdlib | 1.26.9 | 2 |
| thesisrobot/ | 2d1c388a4bda | stdlib | 1.26.9 | 2 |
| thomasnyambati/ | 1e18a0944ceb | stdlib | 1.26.9 | 2 |
| thomasnyambati/ | 148ae3f99fea | stdlib | 1.26.9 | 2 |
| thomseddon/ | e875194d67e2 | stdlib | 1.26.9 | 2 |
| thoughtmachine/ | c6065ba55c72 | stdlib | 1.26.9 | 2 |
| timescale/ | 6343bdc87ca1 | stdlib | 1.26.9 | 2 |
| timescale/ | b346edcdb51a | stdlib | 1.26.9 | 2 |
| tkpd/ | 74441dadcfbd | stdlib | 1.26.9 | 2 |
| traefik/ | 200689790a0a | stdlib | 1.26.9 | 2 |