CVE-2019-11739
MEDIUMCVSS 6.5/10EPSS 0.90%
Last modified
CVE-2019-11739 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Encrypted S/MIME parts in a crafted multipart/alternative message can leak plaintext when included in a a HTML reply/forward. This vulnerability affects Thunderbird < 68.1 and Thunderbird < 60.9.. EPSS estimates a 0.90% chance of exploitation in the next 30 days.
Description
Encrypted S/MIME parts in a crafted multipart/alternative message can leak plaintext when included in a a HTML reply/forward. This vulnerability affects Thunderbird < 68.1 and Thunderbird < 60.9.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | < 60.9.0 |
| Mozilla | Thunderbird | >= 68.0, < 68.1.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1571481Issue Tracking, Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-29/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-30/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1571481Issue Tracking, Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-29/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-30/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-11739?
Encrypted S/MIME parts in a crafted multipart/alternative message can leak plaintext when included in a a HTML reply/forward. This vulnerability affects Thunderbird < 68.1 and Thunderbird < 60.9.
How severe is CVE-2019-11739?
CVE-2019-11739 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.
How do I fix CVE-2019-11739?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Are you affected by CVE-2019-11739?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST