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"name": "firefox-esr", "purl": "pkg:apk/alpine/firefox-esr?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.0-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.13", "name": "firefox-esr", "purl": "pkg:apk/alpine/firefox-esr?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.0-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.14", "name": "firefox-esr", "purl": "pkg:apk/alpine/firefox-esr?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.0-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.15", "name": "firefox-esr", "purl": "pkg:apk/alpine/firefox-esr?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.0-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.16", 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"name": "firefox-esr", "purl": "pkg:apk/alpine/firefox-esr?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.0-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.21", "name": "firefox-esr", "purl": "pkg:apk/alpine/firefox-esr?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.0-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.22", "name": "firefox-esr", "purl": "pkg:apk/alpine/firefox-esr?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.0-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.23", "name": "firefox-esr", "purl": "pkg:apk/alpine/firefox-esr?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.0-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.21", "name": "librewolf", "purl": "pkg:apk/alpine/librewolf?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "84.0.1-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.22", "name": "librewolf", "purl": "pkg:apk/alpine/librewolf?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "84.0.1-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.23", "name": "librewolf", "purl": "pkg:apk/alpine/librewolf?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "84.0.1-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.24", "name": "librewolf", "purl": "pkg:apk/alpine/librewolf?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "84.0.1-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.16", "name": "thunderbird", "purl": "pkg:apk/alpine/thunderbird?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.1-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.17", "name": "thunderbird", "purl": "pkg:apk/alpine/thunderbird?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.1-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.18", "name": "thunderbird", "purl": "pkg:apk/alpine/thunderbird?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.1-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.19", "name": "thunderbird", "purl": "pkg:apk/alpine/thunderbird?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.1-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.20", "name": "thunderbird", "purl": "pkg:apk/alpine/thunderbird?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.1-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.21", "name": "thunderbird", "purl": "pkg:apk/alpine/thunderbird?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.1-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.22", "name": "thunderbird", "purl": "pkg:apk/alpine/thunderbird?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.1-r0" } ], "type": "ECOSYSTEM" } ] }, { "ecosystem_specific": {}, "package": { "ecosystem": "Alpine:v3.23", "name": "thunderbird", "purl": "pkg:apk/alpine/thunderbird?arch=source" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "78.6.1-r0" } ], "type": "ECOSYSTEM" } ] } ], "details": "When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox \u003c 84, Thunderbird \u003c 78.6, and Firefox ESR \u003c 78.6.", "id": "ALPINE-CVE-2020-26974", "modified": "2026-11-03T06:17:57.515052275Z", "published": "2021-01-07T14:15:12Z", "references": [ { "type": "ADVISORY", "url": "https://security.alpinelinux.org/vuln/CVE-2020-26974" } ], "severity": [ { "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "type": "CVSS_V3" } ], "upstream": [ "CVE-2020-26974" ] }