Medium severity4.3NVD Advisory· Published May 22, 2020· Updated Jun 17, 2026
CVE-2020-12397
CVE-2020-12397
Description
By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address that Thunderbird displays. This vulnerability affects Thunderbird < 68.8.0.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10- osv-coords3 versionspkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP1pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweed
< 68.8.0-3.80.2+ 2 more
- (no CPE)range: < 68.8.0-3.80.2
- (no CPE)range: < 68.8.0-lp151.2.38.2
- (no CPE)range: < 91.1.1-1.1
unspecified+ 2 more
- (no CPE)range: unspecified
- (no CPE)range: <68.8.0
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*range: <68.8.0
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*+ 3 more
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
Patches
Vulnerability mechanics
References
4- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPatchVendor Advisory
- security.gentoo.org/glsa/202005-03nvdThird Party Advisory
- usn.ubuntu.com/4373-1/nvdThird Party Advisory
- www.mozilla.org/security/advisories/mfsa2020-18/nvdVendor Advisory
News mentions
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