CVE-2026-0891
- Source
- https://cve.org/CVERecord?id=CVE-2026-0891
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-0891.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-0891
- Downstream
- Related
- Published
- 2026-01-13T14:16:39.627Z
- Modified
- 2026-03-13T22:13:39.661753Z
- Severity
-
- 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
- References
-
- https://www.mozilla.org/security/advisories/mfsa2026-01/
- https://www.mozilla.org/security/advisories/mfsa2026-03/
- https://www.mozilla.org/security/advisories/mfsa2026-04/
- https://www.mozilla.org/security/advisories/mfsa2026-05/
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1964722%2C2000981%2C2003100%2C2003278
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-0891.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "140.7.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "147.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "140.7.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "147.0"
}
]
}
]