CVE-2026-47203
Authelia Missing Username Canonicalization in Basic Auth (LDAP) in github.com/authelia/authelia
EPSS 0.31%
Description
Authelia Missing Username Canonicalization in Basic Auth (LDAP) in github.com/authelia/authelia
How to fix CVE-2026-47203
To remediate CVE-2026-47203, upgrade the affected package to a fixed version below.
- Go/github.com/authelia/authelia—no fix listed
- Go/github.com/authelia/authelia/v4—upgrade to 4.39.20 or later
- Go/github.com/authelia/authelia/v4—upgrade to 4.39.20 or later
Is CVE-2026-47203 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0
- >= 4.38.0, < 4.39.20
- >= 4.38.0, < 4.39.20
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:L/IR:L/AR:L/MAV:N/MAC:H/MAT:N/MPR:N/MUI:N/MVC:L/MVI:N/MVA:N/MSC:N/MSI:N/MSA:N/S:N/AU:Y/R:U/V:D/RE:L/U:Green |