{"id":"ALPINE-CVE-2020-26960","details":"If the Compact() method was called on an nsTArray, the array could have been reallocated without updating other pointers, leading to a potential use-after-free and exploitable crash. This vulnerability affects Firefox \u003c 83, Firefox ESR \u003c 78.5, and Thunderbird \u003c 78.5.","modified":"2026-10-27T08:33:37.386509301Z","published":"2020-12-09T01:15:13.223Z","upstream":["CVE-2020-26960"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2020-26960"}],"affected":[{"package":{"name":"firefox","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/firefox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/firefox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/firefox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/firefox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/firefox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/firefox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/firefox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/firefox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/firefox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/firefox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/firefox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/firefox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox-esr","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/firefox-esr?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox-esr","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/firefox-esr?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox-esr","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/firefox-esr?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox-esr","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/firefox-esr?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox-esr","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/firefox-esr?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox-esr","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/firefox-esr?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox-esr","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/firefox-esr?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox-esr","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/firefox-esr?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox-esr","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/firefox-esr?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox-esr","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/firefox-esr?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox-esr","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/firefox-esr?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"firefox-esr","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/firefox-esr?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"librewolf","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/librewolf?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"librewolf","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/librewolf?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"librewolf","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/librewolf?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"librewolf","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/librewolf?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"thunderbird","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/thunderbird?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"thunderbird","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/thunderbird?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"thunderbird","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/thunderbird?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"thunderbird","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/thunderbird?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"thunderbird","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/thunderbird?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"thunderbird","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/thunderbird?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"thunderbird","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/thunderbird?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}},{"package":{"name":"thunderbird","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/thunderbird?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"78.5.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-26960.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}