VulnSocial

CVE-2026-16400General(mozilla / firefox)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Information disclosure in the DOM: Security component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

mozilla CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-200

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • firefox
  • thunderbird

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • General: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
mozilla
Products
firefoxthunderbird

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-21: 107-21
Signal classification1 categories
General
1100.0%
Full discourse1 post
  • 新月@fubukiyokiyoki
    General

    Firefoxに脆弱性を報告し、Firefox 153で4件のCVEが採番されました！ ・CVE-2026-16380 ・CVE-2026-16381 ・CVE-2026-16400 ・CVE-2026-16406 https://t.co/I01lCCxpmN

    Post summary

    The tweet announces the assignment of four new CVEs to Firefox 153 but provides no further technical details, PoC, patch info, or exploitation status.

    91842611716.1K
    3.3K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appmozillafirefox---
Appmozillathunderbird---

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