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Element-hq vulnerabilities
Newest
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element-hq element-call
Element Call exposes shared passwords in logs
CVE-2026-62347
5.9 Medium
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element-hq element-desktop, element-web +1 more
Element Web and Element Desktop before 1.12.32 Forced Logout via Guest Credential URL Parameters
CVE-2026-119407
7.1 High
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element-hq element-x-ios
Element X iOS: io.element.call deeplink allows attacker-controlled HTTPS origin and may grant mic/camera to that origin
CVE-2026-55644
5.1 Medium
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element-hq element-web
Element Web: A malicious homeserver can inject HTML in Element Web using its homepage
CVE-2026-55850
5.3 Medium
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element-hq element-call
Element Call reports full URLs of visited pages to analytics server
CVE-2026-48007
Fix available
8.6 High
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element synapse
Synapse pagination denial of service
CVE-2026-45076
Fix available
5.1 Medium
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element synapse
Synapse CPU starvation (Denial of Service)
CVE-2026-45078
Fix available
6.8 Medium
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element-hq matrix-tools, ess-helm +1 more
ESS Community Helm Chart has a weak server key generation method
CVE-2026-24044
Fix available
9.2 Critical
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element-hq matrix-authentication-service
Matrix Authentication Service account password can be changed using an authenticated session without supplying the current password
CVE-2025-62425
8.3 High
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element-hq synapse
Synapse: Invalid device keys degrade federation functionality
CVE-2025-61672
Fix available
5.3 Medium
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element-hq element-web
In Element Web and Element Desktop, a malicious room can hide an unrelated room and cause it to be left when the malicious room is left
CVE-2025-59161
Fix available
2.7 Low
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element-hq element-x-android
Element X Android vulnerable to loading malicious web pages via received intent
CVE-2025-27599
6.5 Medium
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element-hq element-web
Element Web could load a malicious instance of Element Call leaking media encryption keys
CVE-2025-32026
3.8 Low
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element-hq element-x-ios
Element X iOS allows the entity in control of the well-known file to break the confidentiality of embedded Element Call
CVE-2025-31126
5.3 Medium
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element-hq element-x-android
Element X Android allows the entity in control of the well-known file to break the confidentiality embedded Element Call
CVE-2025-31127
5.3 Medium
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element-hq synapse
Synapse vulnerable to federation denial of service via malformed events
CVE-2025-30355
Fix available
7.1 High
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element, element-hq element-android +1 more
Element Android PIN autologout bypass
CVE-2025-27606
5.1 Medium
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element-hq synapse
Synapse unauthenticated writes to the media repository allow planting of problematic content
CVE-2024-37303
Fix available
5.3 Medium
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element-hq synapse
Synapse denial of service through media disk space consumption
CVE-2024-37302
Fix available
7.5 High
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element-hq synapse
Synapse allows unsupported content types to lead to memory exhaustion
CVE-2024-52805
Fix available
8.2 High
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element-hq synapse
Synapse allows a a malformed invite to break the invitee's `/sync`
CVE-2024-52815
Fix available
8.7 High
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element-hq synapse
Synapse Matrix has a partial room state leak via Sliding Sync
CVE-2024-53867
Fix available
4.3 Medium
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element-hq synapse
Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders
CVE-2024-53863
Fix available
8.2 High
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element-hq element-web
Element allows a malicious homeserver can modify events leading to unrenderable events or rooms
CVE-2024-51750
5.0 Medium
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element-hq element-web
Element's thumbnails can be abused to misrepresent the content of an attachment
CVE-2024-51749
3.5 Low
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element-hq element-web
Element Web vulnerable to potential exposure of access token via authenticated media
CVE-2024-47779
7.0 High
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element-hq element-desktop
Element Desktop vulnerable to potential exposure of access token via authenticated media
CVE-2024-47771
Fix available
7.0 High
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element-hq synapse, fedoraproject fedora +1 more
Synapse's V2 state resolution weakness allows DoS from remote room members
CVE-2024-31208
Fix available
6.5 Medium
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element, element-hq element-android +1 more
Element Android can be asked to share internal files.
CVE-2024-26132
4.0 Medium
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element, element-hq element-android +1 more
Element Android Intent Redirection
CVE-2024-26131
8.4 High
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element-hq synapse, fedoraproject fedora +1 more
Synapse vulnerable to leak of remote user device information
CVE-2023-43796
Fix available
5.3 Medium
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element-hq synapse, fedoraproject fedora +1 more
matrix-synapse vulnerable to denial of service due to malicious server ACL events
CVE-2023-45129
Fix available
4.9 Medium
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element-hq synapse, fedoraproject fedora +1 more
Improper validation of receipts allows forged read receipts in matrix synapse
CVE-2023-42453
Fix available
3.1 Low
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element-hq synapse, fedoraproject fedora +1 more
Temporary storage of plaintext passwords during password changes in matrix synapse
CVE-2023-41335
Fix available
3.7 Low
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element-hq synapse
URL deny list bypass via oEmbed and image URLs when generating previews in Synapse
CVE-2023-32683
Fix available
3.5 Low
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element-hq synapse
Improper checks for deactivated users during login in synapse
CVE-2023-32682
Fix available
5.4 Medium
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element-hq synapse
Synapse Outgoing federation to specific hosts can be disabled by sending malicious invites
CVE-2023-32323
Fix available
5.0 Medium
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element-hq synapse
Synapse Denial of service due to incorrect application of event authorization rules during state resolution
CVE-2022-39374
Fix available
6.5 Medium
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element-hq synapse
Synapse does not apply enough checks to servers requesting auth events of events in a room
CVE-2022-39335
Fix available
5.0 Medium
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element-hq synapse
Synapse vulnerable to denial of service (DoS) due to incorrect application of event authorization rules
CVE-2022-31152
Fix available
6.4 Medium
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element-hq synapse, fedoraproject fedora +1 more
URL previews can crash Synapse media repositories or Synapse monoliths
CVE-2022-31052
Fix available
6.5 Medium
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element-hq synapse
Uncontrolled Resource Consumption in Matrix Synapse
CVE-2022-41952
Fix available
6.5 Medium
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element-hq synapse, fedoraproject fedora +1 more
Path traversal in Matrix Synapse
CVE-2021-41281
Fix available
7.5 High
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element-hq synapse, fedoraproject fedora +1 more
Improper authorisation of /members discloses room membership to non-members
CVE-2021-39164
Fix available
3.1 Low
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element-hq synapse, fedoraproject fedora +1 more
Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner.
CVE-2021-39163
Fix available
3.1 Low
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element-hq synapse, fedoraproject fedora +1 more
Denial of service in Matrix Synapse
CVE-2021-29471
Fix available
3.7 Low
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element-hq synapse, fedoraproject fedora +1 more
Open redirect via transitional IPv6 addresses on dual-stack networks
CVE-2021-21392
Fix available
6.3 Medium
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element-hq synapse, fedoraproject fedora +1 more
Denial of service (via resource exhaustion) due to improper input validation on groups/communities endpoints
CVE-2021-21393
Fix available
5.3 Medium
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element-hq synapse, fedoraproject fedora +1 more
Denial of service (via resource exhaustion) due to improper input validation on third-party identifier endpoints
CVE-2021-21394
Fix available
5.3 Medium
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element-hq synapse, fedoraproject fedora +1 more
HTML injection in email and account expiry notifications
CVE-2021-21333
Fix available
6.1 Medium
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