CVE•Published 2026-02-24•Modified 2026-06-30•1 article on news•6 live references•NVD data

CVE-2026-2796Mozilla · 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)

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')

Description

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

Timeline

Published 2026-02-24

Modified 2026-06-30

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus VulnCheck

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-2026-2796

Hosts 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-2026-2796

Country / ASN / product breakdown for the vuln query.

Censys

vulnerabilities.cve_id: CVE-2026-2796

Censys host search filtered to this CVE id.

grep.app

CVE-2026-2796

Public source-code mentions — fast PoC discovery.

GitHub code

CVE-2026-2796

GitHub code search for direct mentions.

Google dork

"CVE-2026-2796" exploit -site:nvd.nist.gov

Write-ups and news, NVD excluded.

Known PoCs on GitHub (8)

CVE-2026-27968 repos

DarkFunct/TK-CVE-RepoPython

TK-CVE-Repo

★ 51·updated 4w ago

patrickmgarrity/Anthropic-Credited-CVEsunknown

Tracking Vulnerabilities That Appear to be Credited to the Anthropic Research Team

★ 28·updated today

hiifong/starListPython

Export your star's repository list

★ 18·updated today

str8outtaheap/publicationsJavaScript

Security research writeups

★ 14·updated 1mo ago

AndrewAltimit/exploitsPython

Security research and exploit development: vulnerability analysis, exploit chain implementation, post-exploitation tradecraft, and defensive assessment tooling. Covers browser engi…

★ 6·updated 3w ago

R00T-Kim/TerminatorPython

★ 6·updated 2mo ago

oslook/n8n-workflowsunknown

4200 + Workflow Automation Templates are Grouped by Categories/Services for easy navigation

★ 6·updated 11mo ago

TurtleARM/CVE-2026-31717-KSMBD-ExploitPython

★ 5·updated 2mo ago