Search/CVE-2026-45076
● CVE — Low

CVE-2026-45076

VendorelementProductsynapseDiscoveredMay 28, 2026UpdatedOct 26, 2026

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.

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CVSS v3.1
2.7 LOW
EPSS
0.37%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Sep 25, 2026 → Oct 26, 2026
▼ 0.02pp
0.39% → 0.37% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredHIGH
User InteractionNONE
ScopeUNCHANGED
ConfidentialityNONE
IntegrityNONE
AvailabilityLOW
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
Connections
2 relationships
Timeline
disclosure → media coverage
May 28, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 26, 2026