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
- 5,293
- of 18,131 indexed, latest versions
- Container images
- 6,123
- 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 5,293 of 18,131 indexed charts deploy, on 6,123 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 | 6,123 |
| 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
5,293 by stars
| Chart | Latest | Affected images | Radar Score |
|---|
Container images carrying it
6,123 by charts deploying them
A fixed version is listed for 1 of the 2 affected packages.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| logiqai/ | f5b551bca98e | stdlib | 1.26.9 | 1 |
| logiqai/ | 798306811f2d | stdlib | 1.26.9 | 1 |
| logiqai/ | 3e149f6781b8 | stdlib | 1.26.9 | 1 |
| logiqai/ | 4a746ff04d6a | stdlib | 1.26.9 | 1 |
| lokxy/ | e4ac800dc55d | stdlib | 1.26.9 | 1 |
| longhornio/ | 5b0bc1b88f0c | stdlib | 1.26.9 | 1 |
| longhornio/ | 7372f3c59239 | stdlib | 1.26.9 | 1 |
| longhornio/ | 83b79f57043f | stdlib | 1.26.9 | 1 |
| longhornio/ | ede61fe2a472 | stdlib | 1.26.9 | 1 |
| longhornio/ | fd245bae2e82 | stdlib | 1.26.9 | 1 |
| longhornio/ | 53950f78b7af | stdlib | 1.26.9 | 1 |
| longhornio/ | 9f6e5e3be8ab | stdlib | 1.26.9 | 1 |
| longhornio/ | cb9d6863e4c6 | stdlib | 1.26.9 | 1 |
| longhornio/ | efaf47aeb4e8 | stdlib | 1.26.9 | 1 |
| longhornio/ | 03a3ce6673df | stdlib | 1.26.9 | 1 |
| longhornio/ | 3870d52a2b0a | stdlib | 1.26.9 | 1 |
| longhornio/ | e60f36161511 | stdlib | 1.26.9 | 1 |
| longhornio/ | f22fb0254ae5 | stdlib | 1.26.9 | 1 |
| longhornio/ | 5875cef29348 | stdlib | 1.26.9 | 1 |
| looplj/ | 2c71eeaef295 | stdlib | 1.26.9 | 1 |
| lotest/ | 859b0d36f371 | stdlib | 1.26.9 | 1 |
| louislam/ | 2e478d3170bd | stdlib | 1.26.9 | 1 |
| louislam/ | 059b49d64739 | stdlib | 1.26.9 | 1 |
| louislam/ | 0b55bcb83a1c | stdlib | 1.26.9 | 1 |
| louislam/ | 4c364ef96aad | stdlib | 1.26.9 | 1 |
| louislam/ | 70233f4acb51 | stdlib | 1.26.9 | 1 |
| louislam/ | 917318f9d7be | stdlib | 1.26.9 | 1 |
| louislam/ | 91e963bfda56 | stdlib | 1.26.9 | 1 |
| louislam/ | 9865163f92c1 | stdlib | 1.26.9 | 1 |
| louislam/ | 9912da7d7d9b | stdlib | 1.26.9 | 1 |
| louislam/ | a4eab252e5a2 | stdlib | 1.26.9 | 1 |
| louislam/ | a84767d7934f | stdlib | 1.26.9 | 1 |
| louislam/ | bc6f244ecf27 | stdlib | 1.26.9 | 1 |
| lumenvox/ | 258583dde8a7 | stdlib | 1.26.9 | 1 |
| lumenvox/ | 4611915d66f6 | stdlib | 1.26.9 | 1 |
| lumenvox/ | 7ff037a71c50 | stdlib | 1.26.9 | 1 |
| lumenvox/ | c01faf8d628d | stdlib | 1.26.9 | 1 |
| lumenvox/ | 9a69862e1248 | stdlib | 1.26.9 | 1 |
| lumenvox/ | 7badfce0df13 | stdlib | 1.26.9 | 1 |
| lumenvox/ | dce4f18b4945 | stdlib | 1.26.9 | 1 |
| lumenvox/ | 4cf9bad0381d | stdlib | 1.26.9 | 1 |
| lumenvox/ | 8090031da992 | stdlib | 1.26.9 | 1 |
| lumenvox/ | 1f985ca4d603 | stdlib | 1.26.9 | 1 |
| lumenvox/ | 98fe71067039 | stdlib | 1.26.9 | 1 |
| lumenvox/ | 26edd01fa2ee | stdlib | 1.26.9 | 1 |
| lumenvox/ | 57d15feb3603 | stdlib | 1.26.9 | 1 |
| machines/ | aff504cd28a8 | stdlib | 1.26.9 | 1 |
| macropower/ | c77ab5ea955c | stdlib | 1.26.9 | 1 |
| macropower/ | 1e9c4fb89787 | stdlib | 1.26.9 | 1 |
| macropower/ | dbb05debb785 | stdlib | 1.26.9 | 1 |