Vendor
element-hq
30 known vulnerabilities.
Products
11 results · Clear filters · Feed
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High 7.1
Element Web and Element Desktop before 1.12.32 Forced Logout via Guest Credential URL Parameters
Element Web and Element Desktop before 1.12.32 accept guest credentials from URL fragment parameters in loadSession, allowing remote unauthenticated attackers to log out users and clear local stores. Attackers can lure logged-in users into opening links with …
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High 8.6
Element Call reports full URLs of visited pages to analytics server
Element Call is a native Matrix video conferencing application. Versions 0.5.17 through 0.19.3 report analytics data to a PostHog server, when configured to by a `posthog` key in config.json or by the `posthogApiHost` and `posthogApiKey` URL parameters. Sever…
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High 8.3
Matrix Authentication Service account password can be changed using an authenticated session without supplying the current password
MAS (Matrix Authentication Service) is a user management and authentication service for Matrix homeservers, written and maintained by Element. A logic flaw in matrix-authentication-service 0.20.0 through 1.4.0 allows an attacker with access to an authenticate…
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High 7.1
Synapse vulnerable to federation denial of service via malformed events
Synapse is an open source Matrix homeserver implementation. A malicious server can craft events which, when received, prevent Synapse version up to 1.127.0 from federating with other servers. The vulnerability has been exploited in the wild and has been fixed…
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High 7.5
Synapse denial of service through media disk space consumption
Synapse is an open-source Matrix homeserver. Synapse versions before 1.106 are vulnerable to a disk fill attack, where an unauthenticated adversary can induce Synapse to download and cache large amounts of remote media. The default rate limit strategy is insu…
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High 8.2
Synapse allows unsupported content types to lead to memory exhaustion
Synapse is an open-source Matrix homeserver. In Synapse before 1.120.1, multipart/form-data requests can in certain configurations transiently increase memory consumption beyond expected levels while processing the request, which can be used to amplify denial…
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High 8.7
Synapse allows a a malformed invite to break the invitee's `/sync`
Synapse is an open-source Matrix homeserver. Synapse versions before 1.120.1 fail to properly validate invites received over federation. This vulnerability allows a malicious server to send a specially crafted invite that disrupts the invited user's /sync fun…
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High 8.2
Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders
Synapse is an open-source Matrix homeserver. In Synapse versions before 1.120.1, enabling the dynamic_thumbnails option or processing a specially crafted request could trigger the decoding and thumbnail generation of uncommon image formats, potentially invoki…
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High 7.0
Element Web vulnerable to potential exposure of access token via authenticated media
Element is a Matrix web client built using the Matrix React SDK. Element Web versions 1.11.70 through 1.11.80 contain a vulnerability which can, under specially crafted conditions, lead to the access token becoming exposed to third parties. At least one vecto…
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High 7.0
Element Desktop vulnerable to potential exposure of access token via authenticated media
Element Desktop is a Matrix client for desktop platforms. Element Desktop versions 1.11.70 through 1.11.80 contain a vulnerability which can, under specially crafted conditions, lead to the access token becoming exposed to third parties. At least one vector h…
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High 8.4
Element Android Intent Redirection
Element Android is an Android Matrix Client. Element Android version 1.4.3 through 1.6.10 is vulnerable to intent redirection, allowing a third-party malicious application to start any internal activity by passing some extra parameters. Possible impact includ…