Dendrite 0.13.8 syncapi /context Endpoint Post-Leave State Exposure
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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No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Matrix | Dendrite |
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No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.267% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Matrix
Matrix dendrite |
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| CPEs | cpe:2.3:a:matrix:dendrite:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Matrix
Matrix dendrite |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| 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 | |
| References |
| |
| Metrics |
cvssV3_1
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