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 |
|---|---|---|---|
| version-checkerymrs | 0.2.3 | 1 of 1See more | 4,267 |
| prometheus-monitoring-stackyotron-helm-charts | 1.2.0 | 3 of 3See more | 863 |
| ical-filter-proxyyungwoodVerified publisher | 0.3.1 | 1 of 1See more | 259 |
| synergy-wholesale-exporteryungwoodVerified publisher | 0.1.1 | 1 of 1See more | 259 |
| zahori-consulzahoriVerified publisher | 1.0.1 | 2 of 2See more | 6,700 |
| zahori-moonzahoriVerified publisher | 1.0.1 | 3 of 3See more | 5,025 |
| zahori-schedulerzahoriVerified publisher | 1.0.1 | 1 of 1See more | 3,117 |
| jenkinszanise-jenkins-helm-chart | 0.1.0 | 1 of 1See more | 2,134 |
| posthogzeet | 0.23.2 | 2 of 9See more | 4,799 |
| endlessh-gozekker6Verified publisher | 0.4.0 | 1 of 1See more | 827 |
| karmazekker6Verified publisher | 0.22.0 | 1 of 1See more | 148 |
| zookeeper-exporterzookeeper-exporter | 0.1.0 | 1 of 1See more | 2,294 |
| zoo-project-druzoo-projectOfficialVerified publisher | 0.10.9 | 2 of 6See more | 7,286 |
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 |
|---|---|---|---|---|
| library/ | 885cf05d376c | stdlib | 1.26.9 | 1 |
| library/ | 8ff36f3c6637 | stdlib | 1.26.9 | 1 |
| library/ | a9abf4275f9e | stdlib | 1.26.9 | 1 |
| library/ | bdc3027c1610 | stdlib | 1.26.9 | 1 |
| library/ | c67d80f67f76 | stdlib | 1.26.9 | 1 |
| library/ | c961aa287d86 | stdlib | 1.26.9 | 1 |
| library/ | ced3ba927f4c | stdlib | 1.26.9 | 1 |
| library/ | ceef4a62198b | stdlib | 1.26.9 | 1 |
| library/ | ebba4f4de37f | stdlib | 1.26.9 | 1 |
| library/ | ef257d85f76e | stdlib | 1.26.9 | 1 |
| library/ | f565573d74ae | stdlib | 1.26.9 | 1 |
| library/ | fbcea1bd13b6 | stdlib | 1.26.9 | 1 |
| library/ | 078107e03637 | stdlib | 1.26.9 | 1 |
| library/ | 19c5ee40801d | stdlib | 1.26.9 | 1 |
| library/ | 446551b26c0b | stdlib | 1.26.9 | 1 |
| library/ | 6ec83ef56205 | stdlib | 1.26.9 | 1 |
| library/ | 751bf4eeaa69 | stdlib | 1.26.9 | 1 |
| library/ | 091a7b5de688 | stdlib | 1.26.9 | 1 |
| library/ | 352c1fdadc91 | stdlib | 1.26.9 | 1 |
| library/ | 6a5130174e14 | stdlib | 1.26.9 | 1 |
| library/ | 6aaf3f5e6bc8 | stdlib | 1.26.9 | 1 |
| library/ | 77697a75da9f | stdlib | 1.26.9 | 1 |
| library/ | 83edc2b8e9ff | stdlib | 1.26.9 | 1 |
| library/ | 92b8b307ee28 | stdlib | 1.26.9 | 1 |
| library/ | bb142a9c18ac | stdlib | 1.26.9 | 1 |
| library/ | c1e88455c852 | stdlib | 1.26.9 | 1 |
| library/ | c9d92d840fd0 | stdlib | 1.26.9 | 1 |
| library/ | 04ac44a2595b | stdlib | 1.26.9 | 1 |
| library/ | ddf754342cfc | stdlib | 1.26.9 | 1 |
| library/ | 28e98eece020 | stdlib | 1.26.9 | 1 |
| library/ | 507a3eecf809 | stdlib | 1.26.9 | 1 |
| library/ | 794079a7f241 | stdlib | 1.26.9 | 1 |
| library/ | addb86c0c520 | stdlib | 1.26.9 | 1 |
| library/ | 0a5157f742d2 | stdlib | 1.26.9 | 1 |
| library/ | 104204dadedf | stdlib | 1.26.9 | 1 |
| library/ | 1489caffaedb | stdlib | 1.26.9 | 1 |
| library/ | 1957e3314f43 | stdlib | 1.26.9 | 1 |
| library/ | 2f603f8d3abe | stdlib | 1.26.9 | 1 |
| library/ | 34d5089d0b41 | stdlib | 1.26.9 | 1 |
| library/ | 575fa15b1350 | stdlib | 1.26.9 | 1 |
| library/ | 5d47b7bb2546 | stdlib | 1.26.9 | 1 |
| library/ | 7d0228d19042 | stdlib | 1.26.9 | 1 |
| library/ | b70710baceeb | stdlib | 1.26.9 | 1 |
| library/ | b91812c7ee1b | stdlib | 1.26.9 | 1 |
| library/ | f98ac9dd97b0 | stdlib | 1.26.9 | 1 |
| library/ | d0ae1665a1e8 | stdlib | 1.26.9 | 1 |
| library/ | dfa9ba46d14b | stdlib | 1.26.9 | 1 |
| librenms/ | 0920bc9117a8 | stdlib | 1.26.9 | 1 |
| librenms/ | 4f1f3d667cc7 | stdlib | 1.26.9 | 1 |
| librenms/ | 814e3fb8d837 | stdlib | 1.26.9 | 1 |