CVE-2026-78376

HIGH
MEDIUM Priority: 0.03 BB Relevance: 68/100
Published: 2026-08-24 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Unchanged
C: High
I: High
A: High

Description

A flaw was found in WebKitGTK. Processing malicious web content can cause a use-after-free issue due to improper memory handling and result in memory corruption.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
WebKit WebKit 2.21.1 < *
WebKit WebKit 2.21.1 < *
WebKitGTK WebKitGTK 2.21.1 < *
WebKitGTK WebKitGTK 2.21.1 < *

Bug Bounty Relevance

68 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

8.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.40%
Raw Score 0.003970
Percentile 33.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00397
2026-10-28
0.00388

Intelligence Sources

mitre ref →
nvd ref →