CVE-2026-49448 json
authentik: SourceStage bypass via empty POST
published 5mo ago modified 2mo ago also BIT-authentik-2026-49448 , EUVD-2026-34030 , GHSA-xp7f-xjjx-gwm8
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- 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, the Source stage can be bypassed by sending an empty POST. 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
Is CVE-2026-49448 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 5mo ago
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-11).
Exploits and checks
- github.com https://github.com/goauthentik/authentik/security/advisories/GHSA-xp7f-xjjx-gwm8 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/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-xp7f-xjjx-gwm8
exploit, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-49448
web
Sources
- CVE List CVE-2026-49448
- NVD CVE-2026-49448
- OSV BIT-authentik-2026-49448
Fencer Intel 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.