Dendrite through 0.13.8 contains an improper access control vulnerability in the syncapi /context endpoint (syncapi/routing/context.go) that allows authenticated local users to access post-leave room state events by exploiting a flawed membership check that evaluates only the Roo...
Product
matrix-org github.com/matrix-org/dendrite vulnerabilities
5 published CVES affecting matrix-org github.com/matrix-org/dendrite, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 5
- Critical
- 0
- High
- 2
- Medium
- 3
- Low
- 0
- Unscored
- 0
- CISA KEV
- 0
Latest matrix-org github.com/matrix-org/dendrite CVEs
Newest publication first
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MediumCVSS 5.3 EPSS 0.27%
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MediumCVSS 6.9 EPSS 0.34%
Dendrite through 0.13.8 contains a server-side request forgery vulnerability that allows unauthenticated attackers to cause the server to open outbound TLS connections to arbitrary hosts and ports by supplying an unvalidated serverName parameter to the legacy media download endpo...
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CVE-2026-63095 Dendrite 0.13.8 Improper Authorization via POST account/3pid/delete Endpoint
PublishedHighCVSS 7.1 EPSS 0.30%Dendrite through 0.13.8 contains an improper authorization vulnerability in the Matrix Client-Server API that allows any authenticated local user to delete third-party identifier bindings belonging to other users by submitting an arbitrary address and medium to the account deleti...
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MediumCVSS 5.3 EPSS 0.37%
Dendrite is a Matrix homeserver written in Go. In affected versions events retrieved from a remote homeserver using the /get_missing_events path did not have their signatures verified correctly. This could potentially allow a remote homeserver to provide invalid/modified events t...
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HighCVSS 8.8 EPSS 0.86%
gomatrixserverlib is a Go library for matrix protocol federation. Dendrite is a Matrix homeserver written in Go, an alternative to Synapse. The power level parsing within gomatrixserverlib was failing to parse the "events_default" key of the m.room.power_levels event, defaulting...
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.