CVE-2026-39858
CriticalAdvisory
Published 24 Apr 2026In the index since 6 Sept 2026
- Severity
- Critical
- worst across findings
- CVSS
- 10.0
- base score, highest
- EPSS
- 0.005
- 40th percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 10
- of 17,781 indexed, latest versions
- Container images
- 10
- deployed by those charts
- Fix available
- 2 of 2
- affected packages
Traefik: Pre-authentication decision bypass due to forwarded alias spoofing
Carried by container images the latest versions of 10 of 17,781 indexed charts deploy, on 10 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| github.com/ | v0.0.0-20230427144611-7805c683e333, v0.0.0-20231128144610-dae0491b612a, v0.0.0-20240212151404-0c8778639a3c, v2.8.3+3 more | 2.11.43 | 8 |
| github.com/ | v3.0.0-beta4, v3.6.12, v3.6.13 | 3.6.14 | 3 |
- OSV records
- GHSA-5m6w-wvh7-57vm
- Also known as
- GO-2026-5149
Charts affected
10 by stars
| Chart | Latest | Affected images | Radar Score |
|---|---|---|---|
| syftopenmined | 0.9.5 | 1 of 6See more | 17,245 |
| daskhubdask | 2024.1.1 | 1 of 9See more | 14,094 |
| forecastlestakaterVerified publisher | 2.1.1 | 1 of 1See more | 712 |
| traefik-meshtraefikOfficialVerified publisher | 4.1.1 | 1 of 7See more | 9,257 |
| cosmo-controller-managercosmoVerified publisher | 0.9.0 | 1 of 2See more | 1,927 |
| cosmo-dashboardcosmoVerified publisher | 0.9.1 | 1 of 1See more | 1,939 |
| switchboardswitchboardVerified publisher | 0.7.4 | 1 of 1See more | 839 |
| traefik-hubtraefikOfficialVerified publisher | 4.2.0 | 1 of 1See more | 3,165 |
| cosmo-traefikcosmoVerified publisher | 0.9.1 | 1 of 2See more | 3,672 |
| traefikgpg-dev | 39.0.8 | 1 of 1See more | 1,274 |
Container images carrying it
10 by charts deploying them
A fixed version is listed for 2 of the 2 affected packages.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| library/ | 0a5157f742d2 | github.com/ | 2.11.43 | 1 |
| library/ | 1489caffaedb | github.com/ | 2.11.43 | 1 |
| library/ | 1957e3314f43 | github.com/ | 2.11.43 | 1 |
| library/ | 34d5089d0b41 | github.com/ | 3.6.14 | 1 |
| stakater/ | 382cd9572352 | github.com/ | 2.11.43 | 1 |
| traefik/ | cf071f3e165c | github.com/ | 2.11.43 | 1 |
| ghcr.io/ | 54a193b757da | github.com/ | 3.6.14 | 1 |
| ghcr.io/ | 8c7fa5552028 | github.com/ | 2.11.43 | 1 |
| ghcr.io/ | 6a1c4a81a924 | github.com/ | 2.11.43 | 1 |
| ghcr.io/ | 322f5f8cc105 | github.com/ github.com/ | 2.11.43 3.6.14 | 1 |