CVE-2021-38509
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-38509
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-38509.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-38509
- Downstream
- Related
- Published
- 2021-12-08T22:15:09Z
- Modified
- 2025-08-09T19:01:26Z
- Severity
-
- 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
- References
-
- https://bugzilla.mozilla.org/show_bug.cgi?id=1718571
- https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html
- https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html
- https://security.gentoo.org/glsa/202202-03
- https://security.gentoo.org/glsa/202208-14
- https://www.debian.org/security/2021/dsa-5026
- https://www.debian.org/security/2022/dsa-5034
- https://www.mozilla.org/security/advisories/mfsa2021-48/
- https://www.mozilla.org/security/advisories/mfsa2021-49/
- https://www.mozilla.org/security/advisories/mfsa2021-50/