CVE-2026-49443 json
authentik: `UserSourceConnection.user` and `GroupSourceConnection.group` are changeable through the API
published 2026-06-02 5 mo ago modified 2026-09-08 2 mo ago also BIT-authentik-2026-49443 , EUVD-2026-34028 , GHSA-wr38-7xg8-fqxr
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
authentik is an open-source identity provider. Prior to versions 2025.12.6, 2026.2.4, and 2026.5.1, an attacker with the ability to change a source connection, and an account in one of the configured sources can log into any account. This issue has been patched in versions 2025.12.6, 2026.2.4, and 2026.5.1.
Patch / fix
- bitnami authentik 2025.12.6, 2026.2.4, 2026.5.1
- goauthentik authentik 2025.12.6, 2026.2.4, 2026.5.1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 5 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/goauthentik/authentik/security/advisories/GHSA-wr38-7xg8-fqxr referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | authentik | <2025.12.6 >=2026.0.0, <2026.2.4 >=2026.3.0, <2026.5.1 |
2025.12.6 2026.2.4 2026.5.1 |
Affected products
- goauthentik authentik
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
github.com
/goauthentik/authentik/security/advisories/GHSA-wr38-7xg8-fqxr
exploit, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-49443
web
Sources
- CVE List CVE-2026-49443
- NVD CVE-2026-49443
- OSV BIT-authentik-2026-49443
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.