Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| matrix-org | dendrite | affected |
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Fri, 17 Jul 2026 16:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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 RoomExists field while ignoring IsInRoom, HasBeenInRoom, and Membership fields. Attackers who have left a room can call the rooms context API endpoint for a previously permitted event and receive unfiltered current room state that the /messages and /sync endpoints correctly withhold. | |
| Title | Dendrite 0.13.8 syncapi /context Endpoint Post-Leave State Exposure | |
| Weaknesses | CWE-863 | |
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| Metrics |
cvssV3_1
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-07-17T15:32:45.411Z
Reserved: 2026-07-15T15:45:44.601Z
Link: CVE-2026-63097
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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