VulnSocial

CVE-2026-2799Disclosure(mozilla / firefox)

LOWCVSS 9.8 · CRITICAL

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

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

mozilla CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-416

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

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

  • firefox
  • thunderbird

Threat summary

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 3 classified signals
  • Peaked 1d ago at 2 mentions (2026-02-24); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
mozilla
Products
firefoxthunderbird

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-02-24: 2Mentions · 2026-03-01: 1Technical Details · 2026-02-24: 2Technical Details · 2026-03-01: 102-2403-01
Signal classification1 categories
Disclosure
3100.0%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-02-242
Disclosure2
2026-03-011
Disclosure1
Full discourse3 posts
  • CRAC Learning - Tech@cracbot
    Disclosure

    CVE-2026-2799 (CVSS:9.8, CRITICAL) is Modified. Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148 and Thunderbird < 148...https://nvd.nist.gov/vuln/detail/CVE-2026-2799 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre

    Post summary

    The post announces a critical use‑after‑free vulnerability (CVE‑2026‑2799) affecting Firefox and Thunderbird, providing CVSS score and affected versions, but offers no PoC, exploit, or patch details.

    0000036
    173 followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-2799 Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148. https://www.cve.org/CVERecord?id=CVE-2026-2799 ----- Traducción: CVE-2026-2799 Uso de memoria después de liberarla en el DOM: componente Central y HTML. Esta vul… http://infoflow.cloud`

    Post summary

    The post announces CVE‑2026‑2799, a use‑after‑free vulnerability in Firefox’s DOM components affecting versions below 148, with no PoC, exploit, or patch details provided.

    0000053
    54 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-2799 Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148. https://www.cve.org/CVERecord?id=CVE-2026-2799

    Post summary

    A use‑after‑free vulnerability (CVE‑2026‑2799) in Firefox’s DOM core and HTML components affects versions below 148.

    00000542
    56.6K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appmozillafirefox---
Appmozillathunderbird---

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