NVD / CVE Program· CNA GitHub_M

CVE-2026-25922: authentik has a Signature Verification Bypass via SAML Assertion Wrapping

Noroxi assessment

Priority: Monitor (action score 35/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.24% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

authentik is an open-source identity provider. Prior to 2025.8.6, 2025.10.4, and 2025.12.4, when using a SAML Source that has the option Verify Assertion Signature under Verification Certificate enabled and not Verify Response Signature, or does not have the Encryption Certificate setting under Advanced Protocol settings configured, it was possible for an attacker to inject a malicious assertion before the signed assertion that authentik would use instead. authentik 2025.8.6, 2025.10.4, and 2025.12.4 fix this issue.

HighCVSS 8.8 · v3.1—No exploit No fix recorded

Auth bypass

Published: Feb 12, 2026
Updated: Jun 17, 2026
EPSS: 0.2% · 15th percentile
CWE: CWE-287

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 35 / 40 · 8.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · GitHub_M: 8.8; NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
goauthentik	authentik	cpe:2.3:a:goauthentik:authentik

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

goauthentik authentikbefore 2025.8.6
goauthentik authentik2025.10.0 and later · before 2025.10.4
goauthentik authentik2025.12.0 and later · before 2025.12.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

goauthentik authentik
- < 2025.8.6, >= 2025.10.0-rc1, < 2025.10.4, >= 2025.10.0-rc1, < 2025.12.4affected

Same product

goauthentik: all records

Other highest-scoring records for the same primary product.

CVE-2026-49448authentik: SourceStage bypass via empty POST
39Monitor
CVE-2024-38371Insufficient access control for OAuth2 Device Code flow in authentik
39Monitor
CVE-2023-48228OAuth2: PKCE can be fully circumvented
39Monitor

Published before and after this one in the same product

← EarlierCVE-2026-25227Feb 12, 2026 · authentik affected by Remote Code Execution via Context Key Injection in PropertyMapping Test Endpoint
28Monitor
← EarlierCVE-2026-25748Feb 12, 2026 · authentik has a forward authentication bypass with broken cookie
30Monitor
Later →CVE-2026-40165May 20, 2026 · authentik: SAML NameID XML Comment Injection Enables Authentication Bypass via Identifier Truncation
34Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-49448110 days apartauthentik: SourceStage bypass via empty POST
39Monitor
CVE-2024-47070503 days apartauthentik vulnerable to password authentication bypass via X-Forwarded-For HTTP header
36Monitor
CVE-2026-49443110 days apartauthentik: `UserSourceConnection.user` and `GroupSourceConnection.group` are changeable through the API
35Monitor
CVE-2026-94606224 days apartauthentik: MFA Bypass via State Confusion / Parameter Injection in AuthenticatorEmailStage
35Monitor
CVE-2026-257480 days apartauthentik has a forward authentication bypass with broken cookie
30Monitor
CVE-2026-94612224 days apartauthentik: Authentication bypass via assertion confusion in SAML sources
29Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

CVE-2026-252270 days apartauthentik affected by Remote Code Execution via Context Key Injection in PropertyMapping Test Endpoint
28Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1app.use("/admin", requireSession, adminRouter);
2

3// Route added later skips the middleware
4app.post("/admin-api/config", updateConfig);

Fixed

1const admin = express.Router();
2admin.use(requireSession, requireRole("admin"));
3

4admin.post("/config", updateConfig);
5app.use("/admin", admin);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records