GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration
New Vector Ltd logo
Organization

New Vector Ltd

Private limited Company

Founded by the creators of Matrix, we build digitally sovereign, secure and interoperable real-time communication solutions for large organisations.

Website
https://element.io
Email
contact@element.io
Vendor names
New Vector Ltdvector-imelement-hq
Registered on 2025-04-01, last updated on 2025-04-02.

Products

3 products registered by New Vector Ltd

Element iOS

Element iOS is an iOS Matrix client provided by Element. It is based on MatrixSDK.

Element Android

Element Android is an Android Matrix Client provided by Element.

Synapse

Synapse is an open source Matrix homeserver implementation, written and maintained by Element. Matrix is the open standard for secure and interoperable real time communications.

Recent vulnerabilities

15 published under the CPE names of this organization's products in cvelistv5

CVE-2026-45076 (GCVE-0-2026-45076)

Vulnerability from cvelistv5 – Published: 2026-05-28 15:50 – Updated: 2026-06-02 14:51
VLAI
Title
Synapse pagination denial of service
Summary
Synapse is an open source Matrix homeserver implementation. Prior to 1.152.1, in federated rooms, malicious homeservers can craft room events in such a way that prevents Synapse from providing full history to paginating clients. Clients could therefore fail to display room history. This vulnerability is fixed in 1.152.1.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 14:51 UTC
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
element-hq synapse Affected: < 1.152.1
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Show details on NVD website
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CVE-2026-45078 (GCVE-0-2026-45078)

Vulnerability from cvelistv5 – Published: 2026-05-28 15:52 – Updated: 2026-05-29 15:31
VLAI
Title
Synapse CPU starvation (Denial of Service)
Summary
Synapse is an open source Matrix homeserver implementation. Prior to 1.152.1, local authenticated users can cause Synapse to starve other requests of CPU and lead to other requests failing, causing other users to be denied service. This vulnerability is fixed in 1.152.1.
Severity
6.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-29 15:31 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version
element-hq synapse Affected: < 1.152.1
Create a notification for this product.
Show details on NVD website
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CVE-2025-61672 (GCVE-0-2025-61672)

Vulnerability from cvelistv5 – Published: 2025-10-08 14:55 – Updated: 2025-10-15 16:11
VLAI
Title
Synapse: Invalid device keys degrade federation functionality
Summary
Synapse is an open source Matrix homeserver implementation. Lack of validation for device keys in Synapse before 1.138.3 and in Synapse 1.139.0 allow an attacker registered on the victim homeserver to degrade federation functionality, unpredictably breaking outbound federation to other homeservers. The issue is patched in Synapse 1.138.3, 1.138.4, 1.139.1, and 1.139.2. Note that even though 1.138.3 and 1.139.1 fix the vulnerability, they inadvertently introduced an unrelated regression. For this reason, the maintainers of Synapse recommend skipping these releases and upgrading straight to 1.138.4 and 1.139.2.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-15 16:10 UTC
CWE
  • CWE-1287 - Improper Validation of Specified Type of Input
Assigner
References
Impacted products
Vendor Product Version
element-hq synapse Affected: < 1.138.3
Affected: = 1.139.0
Create a notification for this product.
Show details on NVD website
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CVE-2022-41904 (GCVE-0-2022-41904)

Vulnerability from cvelistv5 – Published: 2022-11-11 00:00 – Updated: 2025-04-23 16:37
VLAI
Title
Element iOS is vulnerable due to missing decoration for events decrypted with untrusted Megolm sessions
Summary
Element iOS is an iOS Matrix client provided by Element. It is based on MatrixSDK. Prior to version 1.9.7, events encrypted using Megolm for which trust could not be established did not get decorated accordingly (with warning shields). Therefore a malicious homeserver could inject messages into the room without the user being alerted that the messages were not sent by a verified group member, even if the user has previously verified all group members. This issue has been patched in Element iOS 1.9.7. There are currently no known workarounds.
Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:54 UTC
CWE
  • CWE-357 - Insufficient UI Warning of Dangerous Operations
Assigner
References
Impacted products
Vendor Product Version
vector-im element-ios Affected: < 1.9.7
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-30355 (GCVE-0-2025-30355)

Vulnerability from cvelistv5 – Published: 2025-03-27 00:59 – Updated: 2025-03-27 13:47
VLAI
Title
Synapse vulnerable to federation denial of service via malformed events
Summary
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 in Synapse v1.127.1. No known workarounds are available.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-27 13:47 UTC
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
element-hq synapse Affected: < 1.127.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-27606 (GCVE-0-2025-27606)

Vulnerability from cvelistv5 – Published: 2025-03-14 16:56 – Updated: 2025-03-14 18:11
VLAI
Title
Element Android PIN autologout bypass
Summary
Element Android is an Android Matrix Client provided by Element. Element Android up to version 1.6.32 can, under certain circumstances, fail to logout the user if they input the wrong PIN more than the configured amount of times. An attacker with physical access to a device can exploit this to guess the PIN. Version 1.6.34 solves the issue.
Severity
5.1 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-14 18:07 UTC
CWE
  • CWE-488 - Exposure of Data Element to Wrong Session
Assigner
References
Impacted products
Vendor Product Version
element-hq element-android Affected: < 1.6.34
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2024-31208 (GCVE-0-2024-31208)

Vulnerability from cvelistv5 – Published: 2024-04-23 17:26 – Updated: 2025-02-13 17:47
VLAI
Title
Synapse's V2 state resolution weakness allows DoS from remote room members
Summary
Synapse is an open-source Matrix homeserver. A remote Matrix user with malicious intent, sharing a room with Synapse instances before 1.105.1, can dispatch specially crafted events to exploit a weakness in the V2 state resolution algorithm. This can induce high CPU consumption and accumulate excessive data in the database of such instances, resulting in a denial of service. Servers in private federations, or those that do not federate, are not affected. Server administrators should upgrade to 1.105.1 or later. Some workarounds are available. One can ban the malicious users or ACL block servers from the rooms and/or leave the room and purge the room using the admin API.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-23 19:13 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version
element-hq synapse Affected: < 1.105.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2024-53863 (GCVE-0-2024-53863)

Vulnerability from cvelistv5 – Published: 2024-12-03 16:48 – Updated: 2024-12-03 19:08
VLAI
Title
Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders
Summary
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 invoking external tools like Ghostscript for processing. This significantly expands the attack surface in a historically vulnerable area, presenting a risk that far outweighs the benefit, particularly since these formats are rarely used on the open web or within the Matrix ecosystem. Synapse 1.120.1 addresses the issue by restricting thumbnail generation to images in the following widely used formats: PNG, JPEG, GIF, and WebP. This vulnerability is fixed in 1.120.1.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-03 19:07 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Vendor Product Version
element-hq synapse Affected: < 1.120.1
Create a notification for this product.
element-hq synapse Affected: 0 , < 1.120.1 (custom)
    cpe:2.3:a:element-hq:synapse:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2024-53867 (GCVE-0-2024-53867)

Vulnerability from cvelistv5 – Published: 2024-12-03 16:52 – Updated: 2024-12-03 19:07
VLAI
Title
Synapse Matrix has a partial room state leak via Sliding Sync
Summary
Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-03 19:07 UTC
CWE
  • CWE-497 - Exposure of Sensitive System Information to an Unauthorized Control Sphere
Assigner
References
Impacted products
Vendor Product Version
element-hq synapse Affected: >= 1.113.0rc1, < 1.120.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2024-52815 (GCVE-0-2024-52815)

Vulnerability from cvelistv5 – Published: 2024-12-03 16:58 – Updated: 2024-12-03 19:06
VLAI
Title
Synapse allows a a malformed invite to break the invitee's `/sync`
Summary
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 functionality. Synapse 1.120.1 rejects such invalid invites received over federation and restores the ability to sync for affected users.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-03 19:05 UTC
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
element-hq synapse Affected: < 1.120.1
Create a notification for this product.
element-hq synapse Affected: 0 , < 1.120.1 (custom)
    cpe:2.3:a:element-hq:synapse:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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displaying 1 - 10 vulnerabilities in total 15