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Vulnerability record · CVE-2026-78376 · published 24 August 2026

CVE-2026-78376: Use after free vulnerability

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.

8.8 CVSS 3.1 High EPSS 0.29% · top 81.1% CWE-416 · Use after free Awaiting Analysis
8.8CVSS 3.1 base score
0.29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
22 Sep 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

LinkTags
https://access.redhat.com/errata/RHSA-2026:69098
https://access.redhat.com/security/cve/CVE-2026-78376
https://bugzilla.redhat.com/show_bug.cgi?id=2521858
https://github.com/WebKit/WebKit/pull/72142

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-78376), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.