{"id":"CLEANSTART-2024-PY72708","summary":"Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free","details":"CVE-2020-6820 affects multiple packages. Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. See references for individual vulnerability details.","modified":"2026-10-31T16:02:00.740654796Z","published":"2026-10-31T14:38:57.725486Z","upstream":["CVE-2020-6820"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2024/CLEANSTART-2024-PY72708.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2020-6820"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-6820"}],"affected":[{"package":{"name":"thunderbird","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/thunderbird"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"68.7.0-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2024/CLEANSTART-2024-PY72708.json"}},{"package":{"name":"librewolf","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/librewolf?arch=x86_64"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"74.0.1-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2024/CLEANSTART-2024-PY72708.json"}},{"package":{"name":"librewolf","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/librewolf?arch=armv7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"74.0.1-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2024/CLEANSTART-2024-PY72708.json"}},{"package":{"name":"librewolf","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/librewolf?arch=aarch64"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"74.0.1-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2024/CLEANSTART-2024-PY72708.json"}},{"package":{"name":"librewolf","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/librewolf?arch=x86"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"74.0.1-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2024/CLEANSTART-2024-PY72708.json"}},{"package":{"name":"librewolf","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/librewolf?arch=ppc64le"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"74.0.1-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2024/CLEANSTART-2024-PY72708.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}