CVE•Published 2026-02-24•Modified 2026-06-30•1 article on news•5 live references•NVD data
CVE-2026-2765Mozilla · 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
—
Weaknesses (CWE)
Description
Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
Timeline
Published 2026-02-24
Modified 2026-06-30
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-2026-2765Hosts 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-2026-2765Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-2765Censys host search filtered to this CVE id.
grep.app
CVE-2026-2765Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-2765GitHub code search for direct mentions.
Google dork
"CVE-2026-2765" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (8)
CVE-2026-27658 repos
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MikeWuPing/bios-security-analysisPython
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JohannesLks/CVE-2026-27654Python
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oslook/n8n-workflowsunknown
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timoguin/starsunknown
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maheshndev/awesome-reposHTML
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lhausermann/AiVulnBenchPython
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