Home/CVE/Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another o
CVE

CVE-2021-38497

Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another o

Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

MEDIUM · CVSS 6.5 EPSS 0.00197
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-346Origin Validation Error
▤

Affected Products & Versions

3
mozilla firefox< 93.0
mozilla firefox esr< 91.2
mozilla thunderbird< 91.2
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSQLite Firefox Profile Data DB Access
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · security@mozilla.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Nov 2021 · 01:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
⚑

Vendor Advisories

25
suse-csafopenSUSE-SU-2024:14572-1
suse-csafopenSUSE-SU-2024:11570-1
suse-csafopenSUSE-SU-2024:11571-1
usnUSN-5248-1
suse-csafopenSUSE-SU-2021:1635-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.mozilla.org/show_bug.cgi?id=1726621Permissions RequiredVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-43/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-45/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-47/Vendor Advisory
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