High 8.8

Vulnerability in WebKitGTK

CVE-2026-83596 First seen on SecPulse Sep 1, 06:17

AI summary

Produced by SecPulse using an external AI model; it may contain mistakes. Check the original description and references below before acting on it.

A vulnerability tracked as CVE-2026-83596 has been found in WebKitGTK.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "WebKitGTK CVE-2026-83596" on the vendor's site.

CVE-2026-83596 (WebKitGTK) — CWE-120 / CVSS v3 8.8
Attack vector: remote (network-reachable) / unauthenticated
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

What is the problem

A vulnerability (CWE-120) exists in WebKitGTK.

Affected scope

Check the vendor advisory for the affected versions of WebKitGTK.

Severity

Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.

How to fix

Update to the patched release per vendor advisory.

Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'WebKitGTK' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposureidentify
```
grep -r 'WebKitGTK' . | grep -v node_modules
```
リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で WebKitGTK を grep し、稼働しているサービス・バージョンを把握する。
2
Post-deployment verificationverify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

Ecosystem	Package	Affected → Fixed	Fixed
WebKit	WebKitWebKit	≥ 1.10.0 (no fix yet)→ Not listed	Not listed
WebKitGTK	WebKitGTKWebKitGTK	≥ 1.10.0 (no fix yet)→ Not listed	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 9	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 9.6 Extended Update Support	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 6	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 7	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	—	Not listed
Red Hat	Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	—	Not listed

This record does not list fixed versions. Check the article or the vendor advisory in the references for whether and where it is fixed.

Fix status by distribution

Records published by each distribution for this CVE. Fixed versions differ by release; check each link.

Debian DEBIAN-CVE-2026-83596 wpewebkit, webkit2gtk Fix available
Ubuntu UBUNTU-CVE-2026-83596 webkitgtk No fixed version in this record

Original description The description as published by the source.

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

Source: NIST National Vulnerability Database NVD GitHub Advisory

AI summary

Response actions

Affected packages

Fix status by distribution

References