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WebKitGTK CVE-2026-83596

| EUVDEUVD-2026-68809 HIGH
Classic Buffer Overflow (CWE-120)
2026-08-31 redhat GHSA-xxgm-wv7m-9vch
8.8
CVSS 3.1 · Vendor: redhat
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Severity by source

Vendor (redhat) PRIMARY
8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI
8.8 HIGH

Network-delivered malicious web content, no authentication needed, user must actively load page; full memory corruption yields high CIA impact with no scope change.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE
HIGH
qualitative
Red Hat
8.8 HIGH
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Aug 31, 2026 - 21:22 vuln.today
CVE Published
Aug 31, 2026 - 20:46 nvd
HIGH 8.8

DescriptionCVE.org

A flaw was found in WebKitGTK. Processing malicious web content can cause memory corruption due to improper memory handling.

AnalysisAI

Memory corruption via classic buffer overflow in WebKitGTK allows remote attackers to achieve full code execution by delivering malicious web content to a victim user. Affecting Red Hat Enterprise Linux versions 6 through 9, the vulnerability requires no authentication and no special configuration - only that a user process attacker-controlled web content through a WebKitGTK-based application. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Persist
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Impact
technique details hidden

Vulnerability AssessmentAI

Exploitation The victim must process attacker-controlled web content using a WebKitGTK-based application on an unpatched Red Hat Enterprise Linux 6, 7, 8, or 9 system. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 8.8 score is consistent with the vulnerability's mechanics: network-delivered (AV:N), low-complexity exploitation (AC:L), no attacker authentication required (PR:N), with full confidentiality, integrity, and availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation The primary fix is to apply the security errata issued by Red Hat for affected RHEL versions using the standard package manager (yum update webkitgtk4 or dnf update webkit2gtk3 depending on RHEL version). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, conduct an inventory of all systems and applications using WebKitGTK across RHEL 6-9 environments to establish baseline exposure and prioritize critical assets. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Affected
SUSE Linux Enterprise Module for Development Tools 15 SP7 Affected
SUSE Linux Enterprise Server 15 SP7 Affected

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CVE-2026-83596 vulnerability details – vuln.today

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