CVE-2022-36009
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-36009
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-36009.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-36009
- Aliases
- Published
- 2022-08-19T20:35:09Z
- Modified
- 2025-12-08T23:55:43.893601Z
- Severity
-
- 5.0 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
- Summary
- Incorrect parsing of access level in gomatrixserverlib and dendrite
- Details
-
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 them.room.power_levelsevent, defaulting the event default power level to zero in all cases. Power levels are the matrix terminology for user access level. In rooms where the"events_default"power level had been changed, this could result in events either being incorrectly authorised or rejected by Dendrite servers. gomatrixserverlib contains a fix as of commit723fd49and Dendrite 0.9.3 has been updated accordingly. Matrix rooms where the"events_default"power level has not been changed from the default of zero are not vulnerable. Users are advised to upgrade. There are no known workarounds for this issue. - Database specific
{ "cwe_ids": [ "CWE-863" ], "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/36xxx/CVE-2022-36009.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/36xxx/CVE-2022-36009.json
- https://github.com/matrix-org/gomatrixserverlib/commit/723fd495dde835d078b9f2074b6b62c06dea4575
- https://github.com/matrix-org/gomatrixserverlib/security/advisories/GHSA-grvv-h2f9-7v9c
- https://matrix.org/docs/guides/moderation/#power-levels
- https://nvd.nist.gov/vuln/detail/CVE-2022-36009