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CVE-2026-39858 Traefik: Forwarded alias spoofing top pre-auth decision bypass
| Reporter | Title | Published | Views | Family All 30 |
|---|---|---|---|---|
 | CVE-2026-39858 | 30 Apr 202620:26 | – | attackerkb |
 | CVE-2026-39858 | 30 Apr 202620:26 | – | alpinelinux |
 | The vulnerability of the intermediate software ForwardAuth in the reverse proxy server Containous Traefik allows a hacker to bypass authentication with invalid credentials. | 12 May 202600:00 | – | bdu_fstec |
 | CVE-2026-39858 | 24 Apr 202613:35 | – | circl |
 | Traefik 安全漏洞 | 30 Apr 202600:00 | – | cnnvd |
 | CVE-2026-39858 | 30 Apr 202620:26 | – | cve |
 | EUVD-2026-26427 | 30 Apr 202620:26 | – | euvd |
 | Traefik: Pre-authentication decision bypass due to forwarded alias spoofing | 24 Apr 202616:32 | – | github |
 | Traefik < 2.11.43 / 3.x < 3.6.14 Multiple Vulnerabilities | 2 May 202600:00 | – | nessus |
 | CVE-2026-39858 | 30 Apr 202621:16 | – | nvd |
10
[
{
"vendor": "traefik",
"product": "traefik",
"versions": [
{
"version": "< 2.11.43",
"status": "affected"
},
{
"version": ">= 3.0.0-beta1, < 3.6.14",
"status": "affected"
},
{
"version": ">= 3.7.0-ea.1, < 3.7.0-rc.2",
"status": "affected"
}
]
}
]Data
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30 Apr 2026 20:26Current
CVSS 47.8
EPSS0.00479