CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-100766

Information disclosure in the Networking: JAR component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.003

EPSS Ranking 17.5%

CVSS Severity

CVSS v3 Score 4.3

References

Products affected by CVE-2026-100766

Mozilla » Firefox » Version: 116.0.1

cpe:2.3:a:mozilla:firefox:116.0.1
Mozilla » Firefox » Version: 116.0.2

cpe:2.3:a:mozilla:firefox:116.0.2
Mozilla » Firefox » Version: 116.0.3

cpe:2.3:a:mozilla:firefox:116.0.3
Mozilla » Firefox » Version: 117.0

cpe:2.3:a:mozilla:firefox:117.0
Mozilla » Firefox » Version: 117.0.1

cpe:2.3:a:mozilla:firefox:117.0.1
Mozilla » Firefox » Version: 118.0

cpe:2.3:a:mozilla:firefox:118.0
Mozilla » Firefox » Version: 118.0.1

cpe:2.3:a:mozilla:firefox:118.0.1
Mozilla » Firefox » Version: 118.0.2

cpe:2.3:a:mozilla:firefox:118.0.2
Mozilla » Firefox » Version: 119.0

cpe:2.3:a:mozilla:firefox:119.0
Mozilla » Firefox » Version: 119.0.1

cpe:2.3:a:mozilla:firefox:119.0.1
Mozilla » Firefox » Version: 120.0

cpe:2.3:a:mozilla:firefox:120.0
Mozilla » Firefox » Version: 120.0.1

cpe:2.3:a:mozilla:firefox:120.0.1
Mozilla » Firefox » Version: 121.0

cpe:2.3:a:mozilla:firefox:121.0
Mozilla » Firefox » Version: 121.0.1

cpe:2.3:a:mozilla:firefox:121.0.1
Mozilla » Firefox » Version: 122.0

cpe:2.3:a:mozilla:firefox:122.0
Mozilla » Firefox » Version: 122.0.1

cpe:2.3:a:mozilla:firefox:122.0.1
Mozilla » Firefox » Version: 123.0

cpe:2.3:a:mozilla:firefox:123.0
Mozilla » Firefox » Version: 123.0.1

cpe:2.3:a:mozilla:firefox:123.0.1
Mozilla » Firefox » Version: 124.0

cpe:2.3:a:mozilla:firefox:124.0
Mozilla » Firefox » Version: 124.0.1

cpe:2.3:a:mozilla:firefox:124.0.1
Mozilla » Firefox » Version: 124.0.2

cpe:2.3:a:mozilla:firefox:124.0.2
Mozilla » Firefox » Version: 125.0.1

cpe:2.3:a:mozilla:firefox:125.0.1
Mozilla » Firefox » Version: 125.0.2

cpe:2.3:a:mozilla:firefox:125.0.2
Mozilla » Firefox » Version: 125.0.3

cpe:2.3:a:mozilla:firefox:125.0.3
Mozilla » Firefox » Version: 126.0

cpe:2.3:a:mozilla:firefox:126.0
Mozilla » Firefox » Version: 126.0.1

cpe:2.3:a:mozilla:firefox:126.0.1
Mozilla » Firefox » Version: 127.0

cpe:2.3:a:mozilla:firefox:127.0
Mozilla » Firefox » Version: 127.0.1

cpe:2.3:a:mozilla:firefox:127.0.1
Mozilla » Firefox » Version: 127.0.2

cpe:2.3:a:mozilla:firefox:127.0.2
Mozilla » Firefox » Version: 128.0

cpe:2.3:a:mozilla:firefox:128.0
Mozilla » Firefox » Version: 128.0.0

cpe:2.3:a:mozilla:firefox:128.0.0
Mozilla » Firefox » Version: 128.0.2

cpe:2.3:a:mozilla:firefox:128.0.2
Mozilla » Firefox » Version: 128.0.3

cpe:2.3:a:mozilla:firefox:128.0.3
Mozilla » Firefox » Version: 128.1.0

cpe:2.3:a:mozilla:firefox:128.1.0
Mozilla » Firefox » Version: 128.10

cpe:2.3:a:mozilla:firefox:128.10
Mozilla » Firefox » Version: 128.10.0

cpe:2.3:a:mozilla:firefox:128.10.0
Mozilla » Firefox » Version: 128.10.1

cpe:2.3:a:mozilla:firefox:128.10.1
Mozilla » Firefox » Version: 128.11.0

cpe:2.3:a:mozilla:firefox:128.11.0
Mozilla » Firefox » Version: 128.12.0

cpe:2.3:a:mozilla:firefox:128.12.0
Mozilla » Firefox » Version: 128.13.0

cpe:2.3:a:mozilla:firefox:128.13.0
Mozilla » Firefox » Version: 128.14.0

cpe:2.3:a:mozilla:firefox:128.14.0
Mozilla » Firefox » Version: 128.2.0

cpe:2.3:a:mozilla:firefox:128.2.0
Mozilla » Firefox » Version: 128.3.0

cpe:2.3:a:mozilla:firefox:128.3.0
Mozilla » Firefox » Version: 128.3.1

cpe:2.3:a:mozilla:firefox:128.3.1
Mozilla » Firefox » Version: 128.4.0

cpe:2.3:a:mozilla:firefox:128.4.0
Mozilla » Firefox » Version: 128.5.0

cpe:2.3:a:mozilla:firefox:128.5.0
Mozilla » Firefox » Version: 128.5.1

cpe:2.3:a:mozilla:firefox:128.5.1
Mozilla » Firefox » Version: 128.5.2

cpe:2.3:a:mozilla:firefox:128.5.2
Mozilla » Firefox » Version: 128.6.0

cpe:2.3:a:mozilla:firefox:128.6.0
Mozilla » Firefox » Version: 128.7.0

cpe:2.3:a:mozilla:firefox:128.7.0
Mozilla » Firefox » Version: 128.8.0

cpe:2.3:a:mozilla:firefox:128.8.0
Mozilla » Firefox » Version: 128.8.1

cpe:2.3:a:mozilla:firefox:128.8.1
Mozilla » Firefox » Version: 128.9.0

cpe:2.3:a:mozilla:firefox:128.9.0
Mozilla » Firefox » Version: 129

cpe:2.3:a:mozilla:firefox:129
Mozilla » Firefox » Version: 129.0

cpe:2.3:a:mozilla:firefox:129.0
Mozilla » Firefox » Version: 129.0.0

cpe:2.3:a:mozilla:firefox:129.0.0
Mozilla » Firefox » Version: 129.0.1

cpe:2.3:a:mozilla:firefox:129.0.1
Mozilla » Firefox » Version: 129.0.2

cpe:2.3:a:mozilla:firefox:129.0.2
Mozilla » Firefox » Version: 130.0

cpe:2.3:a:mozilla:firefox:130.0
Mozilla » Firefox » Version: 130.0.0

cpe:2.3:a:mozilla:firefox:130.0.0
Mozilla » Firefox » Version: 130.0.1

cpe:2.3:a:mozilla:firefox:130.0.1
Mozilla » Firefox » Version: 131.0

cpe:2.3:a:mozilla:firefox:131.0
Mozilla » Firefox » Version: 131.0.0

cpe:2.3:a:mozilla:firefox:131.0.0
Mozilla » Firefox » Version: 131.0.2

cpe:2.3:a:mozilla:firefox:131.0.2
Mozilla » Firefox » Version: 131.0.3

cpe:2.3:a:mozilla:firefox:131.0.3
Mozilla » Firefox » Version: 132.0.0

cpe:2.3:a:mozilla:firefox:132.0.0
Mozilla » Firefox » Version: 132.0.1

cpe:2.3:a:mozilla:firefox:132.0.1
Mozilla » Firefox » Version: 132.0.2

cpe:2.3:a:mozilla:firefox:132.0.2
Mozilla » Firefox » Version: 133.0.0

cpe:2.3:a:mozilla:firefox:133.0.0
Mozilla » Firefox » Version: 133.0.3

cpe:2.3:a:mozilla:firefox:133.0.3
Mozilla » Firefox » Version: 134.0.0

cpe:2.3:a:mozilla:firefox:134.0.0
Mozilla » Firefox » Version: 134.0.1

cpe:2.3:a:mozilla:firefox:134.0.1
Mozilla » Firefox » Version: 134.0.2

cpe:2.3:a:mozilla:firefox:134.0.2
Mozilla » Firefox » Version: 135.0.0

cpe:2.3:a:mozilla:firefox:135.0.0
Mozilla » Firefox » Version: 135.0.1

cpe:2.3:a:mozilla:firefox:135.0.1
Mozilla » Firefox » Version: 136.0

cpe:2.3:a:mozilla:firefox:136.0
Mozilla » Firefox » Version: 136.0.0

cpe:2.3:a:mozilla:firefox:136.0.0
Mozilla » Firefox » Version: 136.0.1

cpe:2.3:a:mozilla:firefox:136.0.1
Mozilla » Firefox » Version: 136.0.2

cpe:2.3:a:mozilla:firefox:136.0.2
Mozilla » Firefox » Version: 136.0.3

cpe:2.3:a:mozilla:firefox:136.0.3
Mozilla » Firefox » Version: 136.0.4

cpe:2.3:a:mozilla:firefox:136.0.4
Mozilla » Firefox » Version: 137.0.0

cpe:2.3:a:mozilla:firefox:137.0.0
Mozilla » Firefox » Version: 137.0.1

cpe:2.3:a:mozilla:firefox:137.0.1
Mozilla » Firefox » Version: 137.0.2

cpe:2.3:a:mozilla:firefox:137.0.2
Mozilla » Firefox » Version: 138.0.0

cpe:2.3:a:mozilla:firefox:138.0.0
Mozilla » Firefox » Version: 138.0.1

cpe:2.3:a:mozilla:firefox:138.0.1
Mozilla » Firefox » Version: 138.0.3

cpe:2.3:a:mozilla:firefox:138.0.3
Mozilla » Firefox » Version: 138.0.4

cpe:2.3:a:mozilla:firefox:138.0.4
Mozilla » Firefox » Version: 139.0.0

cpe:2.3:a:mozilla:firefox:139.0.0
Mozilla » Firefox » Version: 139.0.1

cpe:2.3:a:mozilla:firefox:139.0.1
Mozilla » Firefox » Version: 139.0.4

cpe:2.3:a:mozilla:firefox:139.0.4
Mozilla » Firefox » Version: 140.0

cpe:2.3:a:mozilla:firefox:140.0
Mozilla » Firefox » Version: 140.0.0

cpe:2.3:a:mozilla:firefox:140.0.0
Mozilla » Firefox » Version: 140.0.1

cpe:2.3:a:mozilla:firefox:140.0.1
Mozilla » Firefox » Version: 140.0.2

cpe:2.3:a:mozilla:firefox:140.0.2
Mozilla » Firefox » Version: 140.0.4

cpe:2.3:a:mozilla:firefox:140.0.4
Mozilla » Firefox » Version: 140.1.0

cpe:2.3:a:mozilla:firefox:140.1.0
Mozilla » Firefox » Version: 140.10.0

cpe:2.3:a:mozilla:firefox:140.10.0
Mozilla » Firefox » Version: 140.10.1

cpe:2.3:a:mozilla:firefox:140.10.1
Mozilla » Firefox » Version: 140.10.2

cpe:2.3:a:mozilla:firefox:140.10.2
Mozilla » Firefox » Version: 140.11.0

cpe:2.3:a:mozilla:firefox:140.11.0
Mozilla » Firefox » Version: 140.12.0

cpe:2.3:a:mozilla:firefox:140.12.0
Mozilla » Firefox » Version: 140.13.0

cpe:2.3:a:mozilla:firefox:140.13.0
Mozilla » Firefox » Version: 140.14.0

cpe:2.3:a:mozilla:firefox:140.14.0
Mozilla » Firefox » Version: 140.15.0

cpe:2.3:a:mozilla:firefox:140.15.0
Mozilla » Firefox » Version: 140.2.0

cpe:2.3:a:mozilla:firefox:140.2.0
Mozilla » Firefox » Version: 140.3

cpe:2.3:a:mozilla:firefox:140.3
Mozilla » Firefox » Version: 140.3.0

cpe:2.3:a:mozilla:firefox:140.3.0
Mozilla » Firefox » Version: 140.3.1

cpe:2.3:a:mozilla:firefox:140.3.1
Mozilla » Firefox » Version: 140.4.0

cpe:2.3:a:mozilla:firefox:140.4.0
Mozilla » Firefox » Version: 140.5.0

cpe:2.3:a:mozilla:firefox:140.5.0
Mozilla » Firefox » Version: 140.6.0

cpe:2.3:a:mozilla:firefox:140.6.0
Mozilla » Firefox » Version: 140.7.0

cpe:2.3:a:mozilla:firefox:140.7.0
Mozilla » Firefox » Version: 140.7.1

cpe:2.3:a:mozilla:firefox:140.7.1
Mozilla » Firefox » Version: 140.8.0

cpe:2.3:a:mozilla:firefox:140.8.0
Mozilla » Firefox » Version: 140.9.0

cpe:2.3:a:mozilla:firefox:140.9.0
Mozilla » Firefox » Version: 140.9.1

cpe:2.3:a:mozilla:firefox:140.9.1
Mozilla » Firefox » Version: 154.0.0

cpe:2.3:a:mozilla:firefox:154.0.0
Mozilla » Firefox » Version: 154.0.1

cpe:2.3:a:mozilla:firefox:154.0.1
Mozilla » Firefox » Version: 155.0.0

cpe:2.3:a:mozilla:firefox:155.0.0
Mozilla » Thunderbird » Version: 141.0

cpe:2.3:a:mozilla:thunderbird:141.0
Mozilla » Thunderbird » Version: 142.0

cpe:2.3:a:mozilla:thunderbird:142.0
Mozilla » Thunderbird » Version: 143.0

cpe:2.3:a:mozilla:thunderbird:143.0
Mozilla » Thunderbird » Version: 143.0.1

cpe:2.3:a:mozilla:thunderbird:143.0.1
Mozilla » Thunderbird » Version: 144.0

cpe:2.3:a:mozilla:thunderbird:144.0
Mozilla » Thunderbird » Version: 144.0.1

cpe:2.3:a:mozilla:thunderbird:144.0.1
Mozilla » Thunderbird » Version: 145.0

cpe:2.3:a:mozilla:thunderbird:145.0
Mozilla » Thunderbird » Version: 146.0

cpe:2.3:a:mozilla:thunderbird:146.0
Mozilla » Thunderbird » Version: 146.0.1

cpe:2.3:a:mozilla:thunderbird:146.0.1
Mozilla » Thunderbird » Version: 147.0

cpe:2.3:a:mozilla:thunderbird:147.0
Mozilla » Thunderbird » Version: 147.0.1

cpe:2.3:a:mozilla:thunderbird:147.0.1
Mozilla » Thunderbird » Version: 147.0.2

cpe:2.3:a:mozilla:thunderbird:147.0.2
Mozilla » Thunderbird » Version: 148.0

cpe:2.3:a:mozilla:thunderbird:148.0
Mozilla » Thunderbird » Version: 148.0.1

cpe:2.3:a:mozilla:thunderbird:148.0.1
Mozilla » Thunderbird » Version: 149.0

cpe:2.3:a:mozilla:thunderbird:149.0
Mozilla » Thunderbird » Version: 149.0.1

cpe:2.3:a:mozilla:thunderbird:149.0.1
Mozilla » Thunderbird » Version: 149.0.2

cpe:2.3:a:mozilla:thunderbird:149.0.2
Mozilla » Thunderbird » Version: 150.0

cpe:2.3:a:mozilla:thunderbird:150.0
Mozilla » Thunderbird » Version: 150.0.1

cpe:2.3:a:mozilla:thunderbird:150.0.1
Mozilla » Thunderbird » Version: 150.0.2

cpe:2.3:a:mozilla:thunderbird:150.0.2
Mozilla » Thunderbird » Version: 151.0.0

cpe:2.3:a:mozilla:thunderbird:151.0.0
Mozilla » Thunderbird » Version: 151.0.1

cpe:2.3:a:mozilla:thunderbird:151.0.1
Mozilla » Thunderbird » Version: 152.0.0

cpe:2.3:a:mozilla:thunderbird:152.0.0
Mozilla » Thunderbird » Version: 152.0.1

cpe:2.3:a:mozilla:thunderbird:152.0.1
Mozilla » Thunderbird » Version: 153.0

cpe:2.3:a:mozilla:thunderbird:153.0
Mozilla » Thunderbird » Version: 153.0.1

cpe:2.3:a:mozilla:thunderbird:153.0.1
Mozilla » Thunderbird » Version: 153.0.2

cpe:2.3:a:mozilla:thunderbird:153.0.2
Mozilla » Thunderbird » Version: 153.0.3

cpe:2.3:a:mozilla:thunderbird:153.0.3
Mozilla » Thunderbird » Version: 153.1.0

cpe:2.3:a:mozilla:thunderbird:153.1.0
Mozilla » Thunderbird » Version: 153.1.1

cpe:2.3:a:mozilla:thunderbird:153.1.1
Mozilla » Thunderbird » Version: 153.2.0

cpe:2.3:a:mozilla:thunderbird:153.2.0
Mozilla » Thunderbird » Version: 153.3.0

cpe:2.3:a:mozilla:thunderbird:153.3.0
Mozilla » Thunderbird » Version: 153.3.1

cpe:2.3:a:mozilla:thunderbird:153.3.1
Mozilla » Thunderbird » Version: 154.0

cpe:2.3:a:mozilla:thunderbird:154.0
Mozilla » Thunderbird » Version: 155.0

cpe:2.3:a:mozilla:thunderbird:155.0
Mozilla » Thunderbird » Version: 155.0.1

cpe:2.3:a:mozilla:thunderbird:155.0.1
Mozilla » Thunderbird » Version: 156.0

cpe:2.3:a:mozilla:thunderbird:156.0
Mozilla » Thunderbird » Version: 156.0.1

cpe:2.3:a:mozilla:thunderbird:156.0.1

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-100766

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