7.5

CVE-2026-8947

Use-after-free in the DOM: Bindings (WebIDL) component

Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Mozilla ≫ Firefox SwEditionesr Version < 115.36.0
Mozilla ≫ Firefox SwEdition- Version < 151.0.0
Mozilla ≫ Firefox SwEditionesr Version >= 140.0 < 140.11.0
Mozilla ≫ Thunderbird Version < 140.11
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.41% 0.331
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 7.3 3.9 3.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7.5 1.6 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

CWE-825 Expired Pointer Dereference

The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.

https://www.mozilla.org/security/advisories/mfsa2026-46/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-47/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-48/
Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=2038439
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-51/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-50/
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:21378
https://access.redhat.com/errata/RHSA-2026:21380
https://access.redhat.com/errata/RHSA-2026:21381
https://access.redhat.com/errata/RHSA-2026:21382
https://access.redhat.com/errata/RHSA-2026:22325
https://access.redhat.com/errata/RHSA-2026:22643
https://access.redhat.com/errata/RHSA-2026:26174
https://access.redhat.com/errata/RHSA-2026:26268
https://access.redhat.com/errata/RHSA-2026:26269
https://access.redhat.com/errata/RHSA-2026:26270
https://access.redhat.com/errata/RHSA-2026:26491
https://access.redhat.com/errata/RHSA-2026:26492
https://access.redhat.com/errata/RHSA-2026:26493
https://access.redhat.com/errata/RHSA-2026:26521
https://access.redhat.com/errata/RHSA-2026:26536
https://access.redhat.com/errata/RHSA-2026:26539
https://access.redhat.com/errata/RHSA-2026:26551
https://access.redhat.com/errata/RHSA-2026:26606
https://access.redhat.com/errata/RHSA-2026:26629
https://access.redhat.com/errata/RHSA-2026:26630
https://access.redhat.com/errata/RHSA-2026:27715
https://access.redhat.com/security/cve/CVE-2026-8947
https://bugzilla.redhat.com/show_bug.cgi?id=2479873
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8947.json