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Medium 6.3Published Apr 21, 2026
CVE-2026-6762Spoofing issue in the DOM: Core & HTML component.
Updated under an hour ago ()
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It affects mozilla firefox and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
- CVSS
- 6.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
- Weakness (CWE)
- CWE-290
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
mozilla firefox mozilla:firefox | before 140.10.0; before 150.0 | NVD |
mozilla thunderbird mozilla:thunderbird | from 140.0 before 140.10.0 | NVD |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2021080permissions-required
- https://www.mozilla.org/security/advisories/mfsa2026-30/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-31/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-32/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-33/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-34/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.