{"action":"Upgrade mesop to 1.2.3 or later.","affected":[{"fixed":"1.2.3","introduced":"0"}],"component":"mesop","cve_ids":["CVE-2026-33054"],"ecosystem":"PyPI","epss":0.00725,"exploited":false,"fixed_versions":["1.2.3"],"ghsa_id":"GHSA-8qvf-mr4w-9x2c","id":"tcs_01M5KF8XJPCDQ93PJMJXF1F8J1","modified_at":"2026-06-29T12:26:27.961763680Z","published_at":"2026-03-18T20:01:21Z","references":["https://osv.dev/vulnerability/GHSA-8qvf-mr4w-9x2c","https://github.com/mesop-dev/mesop/security/advisories/GHSA-8qvf-mr4w-9x2c","https://nvd.nist.gov/vuln/detail/CVE-2026-33054","https://github.com/mesop-dev/mesop/commit/c6b382f363b73ac32c402a2db3aadc7784f66a5b","https://github.com/mesop-dev/mesop","https://github.com/mesop-dev/mesop/releases/tag/v1.2.3"],"severity":{"label":"critical","score":10},"sources":[{"source":"osv","source_id":"GHSA-8qvf-mr4w-9x2c","url":"https://osv.dev/vulnerability/GHSA-8qvf-mr4w-9x2c"}],"summary":"Mesop has a Path Traversal utilizing `FileStateSessionBackend` leads to Application Denial of Service and File Write/Deletion"}