CVE-2026-45076
2.7 · LOWOverview
CVE-2026-45076 is a low-severity vulnerability affecting element synapse. It was published on May 28, 2026 and has a CVSS 3.1 base score of 2.7 (LOW).
This vulnerability has a CVSS 3.1 base score of 2.7, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from element. Update synapse to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| element | synapse | >= 0, < 1.152.1 | Affected |
Frequently Asked Questions
What is CVE-2026-45076?
CVE-2026-45076 is a low-severity vulnerability affecting element synapse. It was published on May 28, 2026 and has a CVSS 3.1 base score of 2.7 (LOW).
How severe is CVE-2026-45076?
This vulnerability has a CVSS 3.1 base score of 2.7, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-45076?
Check the references section for vendor advisories and patches from element. Update synapse to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-45076?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-45076 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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