CVE-2026-6782 — Sensitive Information Exposure in Mozilla Firefox

CWE-200 — Sensitive Information ExposureCWE-201 — Sensitive Info Insertion into Sent Data7 documents6 sources
Severity
7.5HIGHNVD
EPSS
0.0%
top 87.88%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxMozilla Thunderbird
Timeline
PublishedApr 21
Latest updateApr 28

Description

Information disclosure in the IP Protection component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶Mozillamozilla/firefox< Firefox 150
▶Mozillamozilla/thunderbird< Thunderbird 150

🔴Vulnerability Details

2
VulDB
Mozilla Firefox up to 149 IP Protection information disclosure (Nessus ID 310637)↗2026-04-28
▶
GHSA
GHSA-rm28-r39x-h3x2: Information disclosure in the IP Protection component↗2026-04-21
▶

📋Vendor Advisories

3
Red Hat
Firefox: Firefox: Information disclosure in the IP Protection component↗2026-04-21
▶
Mozilla
Mozilla Foundation Security Advisory 2026-33: CVE-2026-6782↗
▶
Mozilla
Mozilla Foundation Security Advisory 2026-30: CVE-2026-6782↗
▶

💬Community

1
Bugzilla
CVE-2026-6782 Firefox: Firefox: Information disclosure in the IP Protection component↗2026-04-21
▶
CVE-2026-6782 — Sensitive Information Exposure | cvebase