{"action":"Upgrade cinny to 4.10.3 or later.","affected":[{"fixed":"4.10.3","introduced":"0"}],"component":"cinny","cve_ids":["CVE-2026-42553"],"ecosystem":"npm","epss":0.00484,"exploited":false,"fixed_versions":["4.10.3"],"ghsa_id":"GHSA-j944-w549-3453","id":"tcs_01M5KFXG7VPSRG77CS8DDF0YSP","modified_at":"2026-06-09T00:00:19.393740437Z","published_at":"2026-05-07T16:40:52Z","references":["https://osv.dev/vulnerability/GHSA-j944-w549-3453","https://github.com/cinnyapp/cinny/security/advisories/GHSA-j944-w549-3453","https://nvd.nist.gov/vuln/detail/CVE-2026-42553","https://github.com/cinnyapp/cinny","https://github.com/cinnyapp/cinny/releases/tag/v4.10.3"],"severity":{"label":"high"},"sources":[{"source":"osv","source_id":"GHSA-j944-w549-3453","url":"https://osv.dev/vulnerability/GHSA-j944-w549-3453"}],"summary":"Cinny vulnerable to access token disclosure via invalidated emoji pack avatar URL in service worker"}