VulnSocial

CVE-2026-2798Disclosure(mozilla / firefox)

LOWCVSS 8.8 · 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

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

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

What's happening

  • Technical details provided in 4 signals
  • Disclosure: 4 classified signals
  • Peaked 1d ago at 3 mentions (2026-02-24); latest day: 1
  • 4 total mentions across 2 days

Affected systems

Vendors
mozilla
Products
firefoxthunderbird

Deep dive

Activity timeline4 mentions / 2d
01223Mentions · 2026-02-24: 3Mentions · 2026-03-01: 1Technical Details · 2026-02-24: 3Technical Details · 2026-03-01: 102-2403-01
Signal classification1 categories
Disclosure
4100.0%
Referenced assets4 URLs
Classification over time
DateTotalLabels
2026-02-243
Disclosure3
2026-03-011
Disclosure1
Full discourse4 posts
  • CRAC Learning - Tech@cracbot
    Disclosure

    CVE-2026-2798 (CVSS:8.8, HIGH) is Analyzed. Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148 and Thunderbird < 148...https://nvd.nist.gov/vuln/detail/CVE-2026-2798 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre

    Post summary

    The post announces CVE‑2026‑2798, a use‑after‑free vulnerability in Firefox and Thunderbird before version 148, with a CVSS score of 8.8 and high severity.

    0000033
    173 followersView on X
  • The Hacker Wire@TheHackerWire
    Disclosure

    🟠 CVE-2026-2798 - High Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148 and Thunderbird < 148. https://www.thehackerwire.com/vulnerability/CVE-2026-2798/ https://t.co/Jn5MKUzvJE

    Post summary

    A use‑after‑free vulnerability (CVE‑2026‑2798) affecting Firefox and Thunderbird versions below 148 has been disclosed, with technical details provided but no PoC, exploit, or patch information.

    0000057
    113 followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-2798 Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148. https://www.cve.org/CVERecord?id=CVE-2026-2798 ----- Traducción: CVE-2026-2798 Uso de memoria tras liberarse en el DOM: componente Core y HTML. Esta vulnerabilid… http://infoflow.cloud`

    Post summary

    The post announces CVE-2026-2798, a use‑after‑free bug in Firefox’s DOM core and HTML components affecting versions below 148, with no PoC, exploit, or patch information provided.

    0000062
    54 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-2798 Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148. https://www.cve.org/CVERecord?id=CVE-2026-2798

    Post summary

    A use-after-free vulnerability in Firefox's DOM core and HTML component (CVE-2026-2798) affecting versions below 148 is disclosed, with no PoC, exploit, or patch details provided.

    00000943
    56.6K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appmozillafirefox---
Appmozillathunderbird---

Explore more

Back to dashboardmozilla CVEsfirefox vulnerabilities