12 matches found
CVE-2026-45156-POC
黑客矩阵故障 🚨 CVE-2026-45156 🚨 Nextcloud useroidc ID4me JWT 签名绕过 用于管理员接管的全自动概念验证（PoC）利用程序。 📖 故事背后 每一个 CVE 背后都有一个故事。这个漏洞是在一个寒冷的冬夜凌晨 2 点发现的，伴随着分手混音单曲循环。阅读完整的技术深度剖析、情感过山车以及零信任经验教训： 🔗 阅读完整博客文章 （链接你的博客文章） 🎯 漏洞概述 在处理从 ID4me 身份提供商接收的 JWT 令牌时，Nextcloud 的 useroidc 应用使用 base64decode 处理令牌载荷，而未验证加密签名。 🔥...
CVE-2026-45156 Nextcloud: Authentication Bypass in ID4me handling via Missing JWT Signature Verification in User OIDC
Nextcloud is an open source content collaboration platform. From versions 0.3.0 to before 3.1.0, 5.0.0 to before 5.1.0, and 6.0.0 to before 6.4.0, a missing signature verification in User OIDC allowed a malicious ID4me authority to identify as any user. This issue has been patched in versions...
CVE-2026-45156
Nextcloud vulnerable component: User OIDC handling; a missing signature verification allowed an ID4me authority to impersonate any user. Affected versions: 0.3.0–before 3.1.0, 5.0.0–before 5.1.0, and 6.0.0–before 6.4.0. Root cause: absent JWT/signature check in OIDC flow as described in the CVE d...
CVE-2026-45156 Nextcloud: Authentication Bypass in ID4me handling via Missing JWT Signature Verification in User OIDC
Nextcloud is an open source content collaboration platform. From versions 0.3.0 to before 3.1.0, 5.0.0 to before 5.1.0, and 6.0.0 to before 6.4.0, a missing signature verification in User OIDC allowed a malicious ID4me authority to identify as any user. This issue has been patched in versions...
EUVD-2026-33675
Nextcloud is an open source content collaboration platform. From versions 0.3.0 to before 3.1.0, 5.0.0 to before 5.1.0, and 6.0.0 to before 6.4.0, a missing signature verification in User OIDC allowed a malicious ID4me authority to identify as any user. This issue has been patched in versions...
CVE-2024-37886 Nextcloud user_oidc's ID4me does not validate signature or expiration
useroidc app is an OpenID Connect user backend for Nextcloud. An attacker could potentially trick the app into accepting a request that is not signed by the correct server. It is recommended that the Nextcloud useroidc app is upgraded to 1.3.5, 2.0.0, 3.0.0, 4.0.0 or 5.0.0...
CVE-2024-37312 Nextcloud user_oidc app's ID4me feature is available even when disabled
useroidc app is an OpenID Connect user backend for Nextcloud. Missing access control on the ID4me endpoint allows an attacker to register an account eventually getting access to data that is available to all registered users. It is recommended that the OpenID Connect user backend is upgraded to...
CVE-2024-37312 Nextcloud user_oidc app's ID4me feature is available even when disabled
useroidc app is an OpenID Connect user backend for Nextcloud. Missing access control on the ID4me endpoint allows an attacker to register an account eventually getting access to data that is available to all registered users. It is recommended that the OpenID Connect user backend is upgraded to...
CVE-2024-37312
The CVE concerns Nextcloud’s user_oidc OpenID Connect backend, where the ID4me endpoint lacks access control, enabling account registration and potential access to data available to all registered users. Publicly documented details come from Nextcloud advisories and HackerOne report, which confir...
ID4me does not validate signature or expiration
None...
Nextcloud: ID4me feature of OpenID connect app available even when disabled
The useroidc app in Nextcloud allowed the registration of new accounts by accessing the /apps/useroidc/id4me endpoint, even when the ID4Me feature was disabled. This was caused by the setting to enable/disable ID4Me having no effect on the accessibility of the controllers...