CVE•Published 2026-03-24•Modified 2026-04-13•1 article on news•6 live references•NVD data
CVE-2026-4711Mozilla · Firefox
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
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Weaknesses (CWE)
Description
Use-after-free in the Widget: Cocoa component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
Timeline
Published 2026-03-24
Modified 2026-04-13
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-4711Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Mozilla Firefox"All exposed Mozilla Firefox instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Firefox"HTTP body or banner mentions "Firefox" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-4711Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-4711Censys host search filtered to this CVE id.
grep.app
CVE-2026-4711Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-4711GitHub code search for direct mentions.
Google dork
"CVE-2026-4711" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (4)
CVE-2026-47114 repos
tycloud97/awesome-starsunknown
A curated list of my GitHub stars by stargazed
svg153/awesome-starsJavaScript
mornedhels/windrose-serverShell
Windrose Dedicated Server with autoupdate (supervisord)
jaschadub/compromised-packages-checkPython
Scan a repository for known-malicious npm, cratres, and PyPI package versions from recent supply-chain compromises (Mini Shai-Hulud, TanStack, @cap-js/mbt, etc). UPDATED 6 TIMES A …