Description
If a template tag was used in a select tag, the parser could be confused and allow JavaScript parsing and execution when it should not be allowed. A site that relied on the browser behaving correctly could suffer a cross-site scripting vulnerability as a result. In general, this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but is potentially a risk in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
Metrics
CVSS 3.1 6.1/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | >= unspecified, < 68.5 |
| Mozilla | Firefox | >= unspecified, < 73; >= unspecified, < ESR68.5 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1602944Permissions Required
- https://security.gentoo.org/glsa/202003-02
- https://security.gentoo.org/glsa/202003-10
- https://usn.ubuntu.com/4278-2/
- https://usn.ubuntu.com/4328-1/
- https://usn.ubuntu.com/4335-1/
- https://www.mozilla.org/security/advisories/mfsa2020-05/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-06/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-07/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1602944Permissions Required
- https://security.gentoo.org/glsa/202003-02
- https://security.gentoo.org/glsa/202003-10
- https://usn.ubuntu.com/4278-2/
- https://usn.ubuntu.com/4328-1/
- https://usn.ubuntu.com/4335-1/
- https://www.mozilla.org/security/advisories/mfsa2020-05/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-06/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-07/Vendor Advisory
Timeline
- Published
- Mar 2, 2020
- Last modified
- Jun 17, 2026
- NVD status
- Modified