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CVE-2026-78376: WebKit 2.21.1 to before *; +5 more affected products
CVE-2026-78376. CVSS 3.1 base score 8.8 (HIGH, Vendor/CNA). EPSS 0.00285 (percentile 0.19519), scored 13-Oct-2026.
Affected technology
WebKit · 2.21.1 to before *
WebKit
WebKitGTK · 2.21.1 to before *
WebKitGTK
Red Hat Enterprise Linux 8 · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 9 · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 6 · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 7 · Exact affected versions not specified by the source
Red Hat
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · User interaction required
What an attacker can do
A remote attacker can trigger a use-after-free error. Vendor/CNA’s CVSS 3.1 assessment (base score 8.8/10) rates confidentiality, integrity and availability impact as high. The description does not state a further attacker outcome.
- CWE
- CWE-416
- CCR priority
- 35.3 /100 (P4)
- CVSS 3.1
- 8.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · Vendor/CNA
- EPSS
- 0.00285 · percentile 0.19519 · 2026-10-13
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-14 15:56:36.793806+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-78376.html