CVE-2026-9090

criticalpriority · track · 10EPSS 0.002 · 12 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · PoC

Likely / severe?

0.22% (12th) EPSS

CVSS 9.1 · critical

Is it mine?

3 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · osv

EPSS · scored 2026-10-27

Casdoor versions 2.362.0 and earlier contain a vulnerability that allows an attacker to bypass authentication by supplying an arbitrary signing certificate. The buildSpCertificateStore function extracts the X.509 certificate directly from the incoming SAMLResponse instead of using the trusted pre-configured Identity Provider certificate, allowing an attacker to forge assertions signed with an attacker-controlled key.

cvss

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

9.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.6–9.1

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · ENISA EU

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondaryexploitability 3.9 · impact 5.2

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · OSV

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Psecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287US

exploits (2)

Public proof-of-concept and weaponised exploit code.

affected products (3)

Products and version ranges known to be affected.

casdoor casdoor≤ 0 ≤2.362.0enisa_euvdEU
Go github.com/casdoor/casdoor≤ 1.1000.1-0.20260321120606-239e8bd69487osvUSpkg:golang/github.com/casdoor/casdoor
Go github.com/casdoor/casdoorall versionsosvUSpkg:golang/github.com/casdoor/casdoor

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-fwgq-j9r9-qjgrCasdoor has an authentication bypass2026-05-28ghsa · osvUS
Casdoor versions 2.362.0 and earlier contain a vulnerability that allows an attacker to bypass authentication by supplying an arbitrary signing certificate. The buildSpCertificateStore function extracts the X.509 certificate directly from the incoming SAMLResponse instead of using the trusted pre-configured Identity Provider certificate, allowing an attacker to forge assertions signed with an attacker-controlled key.
GO-2026-5895Casdoor has an authentication bypass in github.com/casdoor/casdoor2026-07-07vendor · osvUS
Casdoor has an authentication bypass in github.com/casdoor/casdoor

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv NVD CVE.org MITRE

published 2026-05-28modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

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