CVE-2026-117860
No known exploitation. EPSS puts it in the 9th percentile. Fixed versions are out.
No public exploit knownFix2 products2 fixed builds listed below
No ready-made check. Neither Nuclei nor OpenVAS has one for this CVE yet.
What to do
Find your product and version, then upgrade to the build on the right.
- Mozilla FirefoxFixed builds153.6, 159Stated by: CVE record
- Mozilla ThunderbirdFixed builds153.6, 159Stated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 9th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
3 events over 0 days, from the signal feeds we watch.
- Publishedrecord updated, record updated
Affected products
Sources
References in the record
- bugzilla.mozilla.org/show_bug.cgi?id=2046558
- mozilla.org/security/advisories/mfsa2026-118/
- mozilla.org/security/advisories/mfsa2026-120/
And 2 more references. See all after sign-in
In the news
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