Code injection

Nextcloud also ships a CLI utility called nextcloudcmd which is sometimes used for automated scripting and headless servers. Versions of nextcloudcmd prior to 3.6.1 would incorrectly trust invalid TLS certificates, which may enable a Man-in-the-middle attack that exposes sensitive data or...

Design/Logic Flaw

useroidc is an OpenID Connect user backend for Nextcloud. In versions prior to 1.2.1 sensitive information such as the OIDC client credentials and tokens are sent in plain text of HTTP without TLS. Any malicious actor with access to monitor user traffic may have been able to compromise account...

Cross site scripting

useroidc is an OpenID Connect user backend for Nextcloud. Versions prior to 1.2.1 did not properly validate discovery urls which may lead to a stored cross site scripting attack vector. The impact is limited due to the restrictive CSP that is applied on this endpoint. Additionally this...

CVE-2022-39331

Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText Markup Language into the Desktop Client application in the notifications. It is recommended that the Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for this issue...

Design/Logic Flaw

Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText Markup Language into the Desktop Client application in the notifications. It is recommended that the Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for this issue...

UBUNTU-CVE-2022-39331

Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText Markup Language into the Desktop Client application in the notifications. It is recommended that the Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for this issue...

UBUNTU-CVE-2022-39334

Nextcloud also ships a CLI utility called nextcloudcmd which is sometimes used for automated scripting and headless servers. Versions of nextcloudcmd prior to 3.6.1 would incorrectly trust invalid TLS certificates, which may enable a Man-in-the-middle attack that exposes sensitive data or...

Nextcloud: Messages can still be seen on conversation after expiring when cron is misconfigured

A vulnerability in Nextcloud Talk allowed expired chat messages to still be visible to anyone with access to the conversation, even after the message expiration time had passed...

Nextcloud: OAuth2 "authorization_code" is valid indefinetly

A security advisory reported that the OAuth2 endpoint was not following best practices, as the authorization code was generated without a timeout, allowing an attacker with access to obtain and redeem the code in the future...

nextcloudcmd incorrectly trusts bad TLS certificates

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XSS in Desktop Client in call notification popup

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XSS in Desktop Client via user status and information

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XSS in Desktop Client in the notifications

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Cleartext Transmission of Sensitive Information in user_oidc

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Missing length validation of user displayname allows to generate an SQL error

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Talk Android broadcast receiver is not protected by broadcastPermission allowing malicious apps to communicate

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PT-2022-24906

Name of the Vulnerable Software and Affected Versions Nextcloud Desktop client versions prior to 3.6.1 Description An attacker can inject arbitrary HyperText Markup Language into the Desktop Client application. There are no known workarounds for this issue. Recommendations For versions prior to...

CVE-2022-39332 Cross-site scripting (XSS) in Nextcloud Desktop Client

Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText Markup Language into the Desktop Client application via user status and information. It is recommended that the Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for...

CVE-2022-39346

Nextcloud server is an open source personal cloud server. Affected versions of nextcloud server did not properly limit user display names which could allow a malicious users to overload the backing database and cause a denial of service. It is recommended that the Nextcloud Server is upgraded to...

CVE-2022-39333

Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText Markup Language into the Desktop Client application. It is recommended that the Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for this issue...