{"action":"Upgrade matrix-synapse to 1.5.0 or later.","affected":[{"fixed":"1.5.0","introduced":"0"}],"component":"matrix-synapse","cve_ids":["CVE-2019-18835"],"ecosystem":"PyPI","epss":0.00864,"exploited":false,"fixed_versions":["1.5.0"],"ghsa_id":"GHSA-cppw-2mf8-qpm5","id":"tcs_01M5KG8V983K3YKYQGF8VHB0KB","modified_at":"2023-11-08T04:01:26.391997Z","published_at":"2019-11-08T00:15:00Z","references":["https://osv.dev/vulnerability/PYSEC-2019-186","https://github.com/matrix-org/synapse/releases/tag/v1.5.0","https://github.com/matrix-org/synapse/pull/6262","https://github.com/advisories/GHSA-cppw-2mf8-qpm5"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"PYSEC-2019-186","url":"https://osv.dev/vulnerability/PYSEC-2019-186"}],"summary":"Matrix Synapse before 1.5.0 mishandles signature checking on some federation APIs. Events sent over /send_join, /send_leave, and /invite may not be correctly signed, or may not come from the expected"}