CVE-2026-68493

A flaw was found in Nextcloud. A malicious logged-in user could potentially guess a highly complex unique identifier. This guessing could allow the user to retrieve a list of memberships for a circle they are not authorized to access, leading to information disclosure...

CVE-2026-77164

A flaw was found in Nextcloud. An unauthenticated remote attacker can exploit a Server-Side Request Forgery SSRF vulnerability in the Circles component. By sending a specially crafted request to the public endpoints, the attacker can force the server to make GET requests to internal network...

CVE-2024-52510

Nextcloud X-E2EE-SIGNATURE Bypass POC Summary During normal operation of Nextcloud's E2EEv2 protocol, clients cryptographically sign folder-metadata before uploading to the server. This ensures the metadata has not been tampered with when it is re-fetched for the purposes of file-sharing or synci...

Windmill/Nextcloud Flow < 1.603.3 - Unauthenticated Path Traversal

Windmill 1.603.3 contains a path traversal caused by unsanitized filename parameter in getlogfile endpoint, letting unauthenticated attackers read arbitrary files on the server, exploit requires no authentication. id: CVE-2026-29059 info: name: Windmill/Nextcloud Flow 1.603.3 - Unauthenticated Pa...

mailinabox

Mail-in-a-Box 作者 @JoshData 和贡献者。 Mail-in-a-Box 通过提供一台一键式、易于部署的 SMTP+全套服务服务器，帮助个人重新掌控自己的电子邮件：一个装在盒子里的邮件服务器。 请访问https://mailinabox.email 查看项目网站和设置指南！ 我们的目标是： 让部署优秀的邮件服务器变得简单。 促进互联网的去中心化、创新和隐私保护。 拥有自动化、可审计且幂等的配置。 不 打造一个完全不可入侵、NSA 也无法攻破的服务器。 不 做成一个可供高级用户自定义的东西。 此外，本项目还有一份行为准则，其优先级高于上述目标。加入我们的社区时，请先阅读...

nextcloud_android

Nextcloud Android app Codacy Badge The Android client forNextcloud. Easily work with your data on your Nextcloud. How to contribute If you want to contribute to Nextcloud, you are very welcome: on our IRC channels and on freenode our forum at https://help.nextcloud.com for translations of the app...

CVE-2026-77165

creationtimestamp| type| source ---|---|--- 2026-09-22 12:15:04+00:00| seen| https://www.acn.gov.it/portale/w/nextcloud-poc-pubblica-per-lo-sfruttamento-della-cve-2026-77165 2026-09-23 01:00:43+00:00| seen|...

NcStatusCheck

NcStatusCheck Centralized monitoring for multiple Nextcloud instances NcStatusCheck is a monitoring tool that lets you track the health of multiple Nextcloud servers from a single web interface. It analyzes Nextcloud and PHP versions and provides update recommendations. 🎯 Features Monitoring...

CVE-2026-45156-POC

Hacker Matrix Glitch 🚨 CVE-2026-45156 🚨 Nextcloud useroidc ID4me JWT Signature Bypass Fully Automated Proof of Concept PoC Exploit for Admin Takeover. 📖 The Story Behind every CVE, there's a story. This one was found at 2 AM on a cold winter night, fueled by a breakup mashup on loop. Read the ful...

PoC---CVE-2023-26482-RCE-LAB-Nextcloud

Next cloud Proof of Concept & Analysis Security Notice This repository reproduces a publicly disclosed and patched vulnerability in a controlled Docker lab environment for educational and research purposes. The environment is intentionally vulnerable and must only be deployed in isolated test...

security-advisories

Security advisories This repository is the authoritative source for security advisories from the Nextcloud project: Advisories after May 2021 are published using GitHub's Security Advisory section Advisories before May 2021 can be found in the archived old/ folder as JSON files...

CVE-2026-77164

Circles' remote-instance signature verification fetches the attacker-supplied keyId URL before trust in the remote instance is established, and explicitly allows local/private addresses for this request, bypassing Nextcloud's core SSRF protections. The public, unauthenticated endpoints POST...

CVE-2026-77164

Circles' remote-instance signature verification fetches the attacker-supplied keyId URL before trust in the remote instance is established, and explicitly allows local/private addresses for this request, bypassing Nextcloud's core SSRF protections. The public, unauthenticated endpoints POST...

CVE-2026-77164

Circles' remote-instance signature verification fetches the attacker-supplied keyId URL before trust in the remote instance is established, and explicitly allows local/private addresses for this request, bypassing Nextcloud's core SSRF protections. The public, unauthenticated endpoints POST...

EUVD-2026-82621

Circles' remote-instance signature verification fetches the attacker-supplied keyId URL before trust in the remote instance is established, and explicitly allows local/private addresses for this request, bypassing Nextcloud's core SSRF protections. The public, unauthenticated endpoints POST...

CVE-2026-77164

CVE-2026-77164 is a blind SSRF in Nextcloud's Circles app. During remote-instance signature verification, the server fetches an attacker-supplied keyId URL before trust is established and explicitly permits local/private addresses, bypassing Nextcloud's core SSRF protections. The vulnerable code ...

nextcloud-mcp-server: Unauthenticated `POST /webhooks/nextcloud` allows arbitrary vector data deletion when `WEBHOOK_SECRET` is unset ( default )

SummaryThe POST /webhooks/nextcloud endpoint has no authentication by default: WEBHOOKSECRET defaults to None and is never required by startup validation. When unset, the receiver accepts any unauthenticated POST. The userid is taken directly from the attacker-supplied payload and passed to Qdran...

PYSEC-2026-3866 nextcloud-mcp-server: Unauthenticated `POST /webhooks/nextcloud` allows arbitrary vector data deletion when `WEBHOOK_SECRET` is unset ( default )

Summary The POST /webhooks/nextcloud endpoint has no authentication by default: WEBHOOKSECRET defaults to None and is never required by startup validation. When unset, the receiver accepts any unauthenticated POST. The userid is taken directly from the attacker-supplied payload and passed to...

GHSA-3MCP-22MF-VRW3 vulnerabilities

Vulnerabilities for packages: awx, gitlab-rails-ce-fips, lerna, jitsucom-jitsu, wazuh-dashboard, azurite, redisinsight, kubeflow-centraldashboard, prism, librechat, opensearch-dashboards, langfuse, langfuse-fips, semaphore, wazuh-dashboard-fips, gitlab-rails-ce, kibana, nextcloud-server,...

CVE-2026-67321 vulnerabilities

Vulnerabilities for packages: awx, gitlab-rails-ce-fips, lerna, jitsucom-jitsu, wazuh-dashboard, azurite, redisinsight, kubeflow-centraldashboard, prism, librechat, opensearch-dashboards, langfuse, langfuse-fips, semaphore, wazuh-dashboard-fips, gitlab-rails-ce, kibana, nextcloud-server,...