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Security update for webkit2gtk3

SUSE-SU-2026:1749-1 First seen on SecPulse

Summary

Vulnerability reported (SUSE-SU-2026:1749-1). Risk of unauthorized operations or information disclosure.

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as SUSE-SU-2026:1749-1 has been found.
Risk of unauthorized operations or information disclosure.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "SUSE-SU-2026:1749-1" on the vendor's site.

SUSE-SU-2026:1749-1
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 (unclassified) has been reported.

Affected scope

Check the vendor advisory for the affected versions.

Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

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. Audit SBOM/dependencies to find affected services.

Response actions

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

  1. 1
    Identify exposureidentify
    Audit SBOM/dependencies for affected components.

    資産台帳・SBOM・依存マニフェストで影響コンポーネントを特定する。

  2. 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。

Original description The description as published by the source.

This update for webkit2gtk3 fixes the following issues:

Update to version 2.52.1.

Security issues fixed:

  • CVE-2026-20643: processing maliciously crafted web content may bypass Same Origin Policy (bsc#1261172).
  • CVE-2026-20664: processing maliciously crafted web content may lead to an unexpected process crash (bsc#1261173).
  • CVE-2026-20665: processing maliciously crafted web content may prevent Content Security Policy from being enforced
    (bsc#1261174).
  • CVE-2026-20691: a maliciously crafted webpage may be able to fingerprint the user (bsc#1261175).
  • CVE-2026-28857: processing maliciously crafted web content may lead to an unexpected process crash (bsc#1261176).
  • CVE-2026-28859: a malicious website may be able to process restricted web content outside the sandbox (bsc#1261177).
  • CVE-2026-28861: a malicious website may be able to access script message handlers intended for other origins
    (bsc#1261178).
  • CVE-2026-28871: visiting a maliciously crafted website may lead to a cross-site scripting attack (bsc#1261179).

Other updates and bugfixes:

  • Reduce the amount of useless MPRIS notifications produced by MediaSession when the information about media being
    played is incomplete.
  • Support turning off USE_GSTREAMER to configure the build with all multimedia features disabled.
  • Add Sysprof marks for mouse events.
  • Fix MediaSession icon for iheart.com not being displayed.
  • Fix the build with USE_GSTREAMER_GL disabled.
  • Fix the build with librice version 0.3.0 or…

Source: OSV.dev (Open Source Vulnerabilities) OSV

References

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