Security Vulnerability Report
中文
CVE-2026-8094 CVSS 9.8 CRITICAL

CVE-2026-8094

Published: 2026-05-07 13:16:14
Last Modified: 2026-05-11 15:12:23

Description

Other issue in the WebRTC component. This vulnerability was fixed in Firefox ESR 140.10.2 and Thunderbird 140.10.2.

CVSS Details

CVSS Score
9.8
Severity
CRITICAL
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* - VULNERABLE
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* - VULNERABLE
Firefox ESR < 140.10.2
Thunderbird < 140.10.2

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
<!-- Proof of Concept for CVE-2026-8094 WebRTC Vulnerability --> <!-- This is a simulation of triggering the vulnerability via WebRTC API --> <!DOCTYPE html> <html> <head> <title>CVE-2026-8094 PoC</title> </head> <body> <h1>CVE-2026-8094 WebRTC PoC</h1> <script> // Attempt to trigger the vulnerability in the WebRTC component // Note: Actual exploit requires specific memory layout and payload const pc = new RTCPeerConnection({ iceServers: [{urls: 'stun:stun.l.google.com:19302'}] }); // Create a data channel to potentially trigger the issue const dc = pc.createDataChannel("exploit"); // Simulate malicious SDP offer/answer handling // In a real scenario, specific malformed SDP would be used here pc.createOffer().then(offer => { console.log("Offer created:", offer); // Malformed manipulation would happen here return pc.setLocalDescription(offer); }).catch(e => console.error(e)); dc.onopen = () => { console.log("Data channel open"); // Sending malicious payload dc.send(new ArrayBuffer(0x1000)); }; </script> </body> </html>

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-8094", "sourceIdentifier": "[email protected]", "published": "2026-05-07T13:16:14.430", "lastModified": "2026-05-11T15:12:23.117", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Other issue in the WebRTC component. This vulnerability was fixed in Firefox ESR 140.10.2 and Thunderbird 140.10.2."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-94"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "versionEndExcluding": "140.10.2", "matchCriteriaId": "5B8D4D01-7F7A-4D2F-99B3-29568F385D58"}, {"vulnerable": true, "criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "versionEndExcluding": "140.10.2", "matchCriteriaId": "3A9A22C6-2E6B-4DE6-923D-A7BA854A1261"}]}]}], "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2035939", "source": "[email protected]", "tags": ["Permissions Required"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2026-41/", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2026-44/", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}