CVE-2026-2804Disclosure(mozilla / firefox)

LOWCVSS 5.4 · MEDIUM

Signal is active with 2 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

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

mozilla CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

Other references

https://bugzilla.mozilla.org/show_bug.cgi?id=2013584

Weakness type (CWE)

CWE-416

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

2 mentions across 1 observed day

What's happening

Technical details provided in 2 signals
Disclosure: 2 classified signals
2 total mentions across 1 day

Affected systems

Vendors

mozilla

Products

firefoxthunderbird

Deep dive

Activity timeline2 mentions / 1d

Signal classification1 categories

Disclosure

2100.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

Infoflowcloud@infoflowcloud227d
Disclosure
🚨*CVE* CVE-2026-2804 Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148. https://www.cve.org/CVERecord?id=CVE-2026-2804 ----- Traducción: CVE-2026-2804 Uso después de liberación en el componente de JavaScript: WebAssembly. Esta… http://infoflow.cloud`
Post summary
A new use‑after‑free vulnerability (CVE‑2026‑2804) affecting Firefox versions below 148 has been disclosed, with details available on the CVE record.
0000045
54 followersView on X
CVE@CVEnew227d
Disclosure
CVE-2026-2804 Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148. https://www.cve.org/CVERecord?id=CVE-2026-2804
Post summary
A use‑after‑free vulnerability (CVE‑2026‑2804) in Firefox’s WebAssembly component is disclosed, affecting versions below 148.
00000237
56.6K followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	mozilla	firefox	-	-	-
App	mozilla	thunderbird	-	-	-

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