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
- 5,306
- of 18,108 indexed, latest versions
- Container images
- 6,104
- 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 5,306 of 18,108 indexed charts deploy, on 6,104 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 | 6,104 |
| golang-1.19deb | 1.19.8-2 | no fix listed | 1 |
- OSV records
- DEBIAN-CVE-2026-56866GO-2026-6605
- Trending
- Rank 9 in indexed charts, since 9 Oct 2026. See the ranking →
Charts affected
5,306 by stars
Container images carrying it
6,104 by charts deploying them
A fixed version is listed for 1 of the 2 affected packages.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| bitnamilegacy/ | 70cafc5a71e8 | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | 7788b908dd0d | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | 9c6fecd24bf3 | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | bf01d031ba8c | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | cdc2efa9c306 | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | fa288394f402 | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | a53d023fdfaf | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | a006df1fd47e | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | 3c26208691a1 | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | 0cb31d0fc356 | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | 5bf82b98c82c | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | 0384ca2eec63 | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | 4f0191fba7d3 | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | a185655855b3 | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | cbf54314c401 | stdlib | 1.26.9 | 1 |
| bitnamilegacy/ | dba59d740e13 | stdlib | 1.26.9 | 1 |
| bitnami/ | 16a7dae804fb | stdlib | 1.26.9 | 1 |
| bitnami/ | b3bd5b6be9a0 | stdlib | 1.26.9 | 1 |
| bitnami/ | fb4874bb3d07 | stdlib | 1.26.9 | 1 |
| bitnami/ | 33a5a129cadc | stdlib | 1.26.9 | 1 |
| bitnami/ | 4e65bf641805 | stdlib | 1.26.9 | 1 |
| bitnami/ | d75bda00b778 | stdlib | 1.26.9 | 1 |
| bitnami/ | c6a2883c0bb7 | stdlib | 1.26.9 | 1 |
| bitnami/ | 0516f987fae2 | stdlib | 1.26.9 | 1 |
| bitnami/ | 3fe0103896b8 | stdlib | 1.26.9 | 1 |
| bitnami/ | 74eaff41382b | stdlib | 1.26.9 | 1 |
| bitnami/ | a364a0270d35 | stdlib | 1.26.9 | 1 |
| bitnami/ | 845d250ecd73 | stdlib | 1.26.9 | 1 |
| bitpoke/ | c5eed1ddf692 | stdlib | 1.26.9 | 1 |
| bitpoke/ | 21284d1df473 | stdlib | 1.26.9 | 1 |
| bitpoke/ | 7fb3aad37b5f | stdlib | 1.26.9 | 1 |
| blackducksoftware/ | b805c1f607e0 | stdlib | 1.26.9 | 1 |
| blackducksoftware/ | ad33e84750f1 | stdlib | 1.26.9 | 1 |
| blipai/ | 737d5d19a312 | stdlib | 1.26.9 | 1 |
| blipai/ | db8cd873d0eb | stdlib | 1.26.9 | 1 |
| bloomberg/ | 8520120f5598 | stdlib | 1.26.9 | 1 |
| bloxstaking/ | bf6d7d2fdc93 | stdlib | 1.26.9 | 1 |
| bluenviron/ | 9e39256d1ba3 | stdlib | 1.26.9 | 1 |
| bolkedebruin/ | c0dc0589373a | stdlib | 1.26.9 | 1 |
| bonovoo/ | bb93b68fcd17 | stdlib | 1.26.9 | 1 |
| breton/ | 41b1bb483aa2 | stdlib | 1.26.9 | 1 |
| broadinstitute/ | 656131886a08 | stdlib | 1.26.9 | 1 |
| bsgrigorov/ | 45ab095f09c8 | stdlib | 1.26.9 | 1 |
| buall/ | 881a785642cb | stdlib | 1.26.9 | 1 |
| buddyspencer/ | 6b656f19b0c1 | stdlib | 1.26.9 | 1 |
| buddyspencer/ | 9e7dbf923c12 | stdlib | 1.26.9 | 1 |
| buildkite/ | aec38cfaae0e | stdlib | 1.26.9 | 1 |
| bulich/ | 6d0b780f7c7b | stdlib | 1.26.9 | 1 |
| burganbank/ | 9259c34e4037 | stdlib | 1.26.9 | 1 |
| burningalchemist/ | 6c554722facc | stdlib | 1.26.9 | 1 |