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[NEW] [UNPATCHED] [high] WebKitGTK: Vulnerability allows Code Execution

highCVE-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

vendor: WebKitGTKproduct: WebKitGTKMemory corruptionRemote code executionDenial of service
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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Details

Source
CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity
high
Published
2026-08-25
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2987

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-78376coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for WebKitGTK

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CERT-Bund (BSI) Security Advisories