Cleartext Transmission of Sensitive Information Affecting thunderbird package, versions <1:60.9.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.9% (55th percentile)

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  • Snyk IDSNYK-ECHOLATEST-THUNDERBIRD-18319096
  • published26 Jul 2026
  • disclosed27 Sept 2019

Introduced: 27 Sep 2019

CVE-2019-11739  (opens in a new tab)
CWE-319  (opens in a new tab)

How to fix?

Upgrade Echo:latest thunderbird to version 1:60.9.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1