CVE-2026-25922

highpriority · track · 0EPSS 0.002 · 15 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.24% (15th) EPSS

CVSS 8.8 · high

Is it mine?

8 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · security-advisories@github.comexploitability 2.8 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USCWE-347US

affected products (8)

Products and version ranges known to be affected.

goauthentik authentik≤ < 2025.8.6enisa_euvdEU
goauthentik authentik2025.10.0-rc1, → 2025.10.4enisa_euvdEU
goauthentik authentik2025.10.0-rc1, → 2025.12.4enisa_euvdEU
goauthentik authentik< 2025.8.6nvdUScpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*
goauthentik authentik2025.10.0 → 2025.10.4nvdUScpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*
goauthentik authentik2025.12.0 → 2025.12.4nvdUScpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*
Bitnami authentik< 2025.8.6osvUSpkg:bitnami/authentik
Bitnami authentik2025.10.0 → 2025.12.4osvUSpkg:bitnami/authentik

advisories (1)

Vendor and ecosystem advisories describing this.

BIT-authentik-2026-25922authentik has a Signature Verification Bypass via SAML Assertion Wrapping2026-04-16vendor · osvUS
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2026-02-12modified 2026-06-17

references (13)

External citations — patches, advisories, analysis.

scry

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