CVE-2026-78376
A remote, anonymous attacker can exploit a vulnerability in WebKitGTK to cause memory corruption, which may enable code execution or a Denial-of-Service condition.
CSIRTS triage
- What
- Memory corruption in WebKitGTK may enable remote code execution or denial of service.
- Who is affected
- Any deployment running affected versions of WebKitGTK.
- Urgency
- High severity; unpatched vulnerability with demonstrated memory corruption capability warrants prompt remediation.
- Action
- Update WebKitGTK to patched version when available or apply vendor mitigations.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all EPSS-scored CVEs.
Advisory coverage (2)
- high[NEW] [UNPATCHED] [high] WebKitGTK: Vulnerability allows Code Executioncert-bund · 2026-08-25
- highCVE-2026-78376: A flaw was found in WebKitGTK. Processing malicious web content can cause a use-after-free iss…nvd · 2026-08-24
External references
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[](https://www.csirts.com/cve/CVE-2026-78376)