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CVE-2026-90942— Casdoor through 4.4.0 Private Key Exposure via Certificate Endpoints

Quick assessment

Affected
casdoor casdoor
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Casdoor 4.4.0 及更早版本在 和 端点未能正确遮蔽实例级别的内置证书私钥，导致组织管理员能够获取该私钥。攻击者可利用此泄露的私钥为任意组织中的任何用户（包括全局管理员）伪造 JWT 令牌。

CVSS 9.6 · Critical

Affected Version Matrix 1

VendorProduct Version RangeStatus
casdoor casdoor ≤ 4.4.0 affected
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I. Basic Information for CVE-2026-90942

Vulnerability Information
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Vulnerability Title
Casdoor through 4.4.0 Private Key Exposure via Certificate Endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
Casdoor through 4.4.0 fails to properly mask the instance-wide built-in certificate private key in /api/get-certs and /api/get-cert endpoints, allowing organization administrators to retrieve it. Attackers can use the exposed private key to forge JWT tokens for any user in any organization, including global administrators.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
casdoor casdoor 0 ~ 4.4.0 -

II. Public POCs for CVE-2026-90942

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-90942

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Patches & Fixes for CVE-2026-90942 (2)

Vendor Advisories for CVE-2026-90942 (1)

Proof of Concept for CVE-2026-90942 (1)

Vendor Pages for CVE-2026-90942 (1)

IV. Related Vulnerabilities

Same product: casdoor
Same vendor: casdoor
Same weakness: CWE-863

V. Comments for CVE-2026-90942

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