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CVE-2026-92238 Details
Description
A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Sep 22, 2026Exploitation: NoneAutomatable: YesTechnical Impact: Total
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2060601 | [email protected] | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2026-94/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-95/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-96/ | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-444 | Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mozilla thunderbird | < 140.16.0 >= 141.0, < 153.3.0 >= 154.0, < 156.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 24, 2026 | Initial Analysis | [email protected] |
| Sep 22, 2026 | CVE Modified | CISA-ADP |
| Sep 16, 2026 | CVE Modified | [email protected] |
| Sep 15, 2026 | New CVE Received | [email protected] |