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CVE-2026-6762Spoofing issue in the DOM: Core & HTML component
- 6.3MediumCVSS base score
- 0.19%Exploitation in 30 daysEPSS · top 92% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By mozilla
Published
- 35 days later
· 35 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |
| NVDNVD · Analyzed | 3.1 | Medium6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |
- EPSS (exploitation in 30 days)
- 0.19% · top 92% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.3.
Affected products
- unaffected 115.35 – ≤ 115.*
- unaffected 140.10 – ≤ 140.*
- unaffected 150 – ≤ *
- unaffected 140.10 – ≤ 140.*
- unaffected 150 – ≤ *
References
References6
- https://bugzilla.mozilla.org/show_bug.cgi?id=2021080 (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2026-30/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2026-31/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2026-32/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2026-33/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2026-34/ (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-24103 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-6762)Record last updated .