CVE-2021-38509
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.
- Affected products
- Alt Linux, Almalinux, Astra Linux, Centos, Firefox, Firefox Esr, Linuxmint, Red Hat
- Mozilla Firefox
- < 94.0
- Mozilla Firefox Esr
- < 91.3.0
- Mozilla Thunderbird
- < 91.3.0
- Fix
- Available
- CVSS 3.1
- 4.3 MEDIUM
- EPSS
- 1.6% (74th percentile)
- Weakness
- CWE-1021
- NVD status
- Modified
- Published
- 2021-12-08
CVE-2021-38509 at NVD
No indexed exploits for CVE-2021-38509 yet
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No exploit for CVE-2021-38509 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.