VulnSocial

CVE-2026-12323Patch(mozilla / firefox)

LOWCVSS 5.4 · MEDIUM

Signal is active with 3 mentions in latest observed window

Immediate actions

  • Patch mozilla firefox systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

mozilla CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-1021

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

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

  • Patch or workaround signal is available
  • 3 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 3 signals
  • Disclosure: 1 classified signal
  • 3 total mentions across 1 day

Affected systems

Vendors
mozilla
Products
firefoxthunderbird

Deep dive

Activity timeline3 mentions / 1d
01223Mentions · 2026-06-16: 3Patch / Workaround · 2026-06-16: 2Technical Details · 2026-06-16: 306-16
Signal classification2 categories
Patch
266.7%
Disclosure
133.3%
Referenced assets4 URLs
Full discourse3 posts
  • Infoflowcloud@infoflowcloud
    Patch

    🚨*CVE* CVE-2026-12323 Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152 and Thunderbird 152. https://www.cve.org/CVERecord?id=CVE-2026-12323 ----- Traducción: CVE-2026-12323 Problema de suplantación en el DOM: componente Core y HTM… http://infoflow.cloud`

    Post summary

    The text announces a DOM spoofing vulnerability (CVE-2026-12323) and informs that it has been fixed in Firefox 152 and Thunderbird 152.

    0000034
    82 followersView on X
  • CVE@CVEnew
    Patch

    CVE-2026-12323 Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152 and Thunderbird 152. https://www.cve.org/CVERecord?id=CVE-2026-12323

    Post summary

    The post announces that CVE‑2026‑12323, a DOM-based spoofing flaw, has been patched in Firefox and Thunderbird 152.

    00000254
    57.6K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-12323 DOM Spoofing Vulnerability in Firefox Core and HTML Component Bef... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-12323 Vulnerability Alert Subscriptions: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=1

    Post summary

    The text announces a new DOM Spoofing vulnerability (CVE‑2026‑12323) affecting Firefox Core and the HTML component, providing minimal technical details without any PoC, exploit, or mitigation information.

    0000046
    4.0K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appmozillafirefox---
Appmozillathunderbird---

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