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SUSE-SU-2026:1741-1

Security update for MozillaThunderbird

Summary

Vulnerability reported (SUSE-SU-2026:1741-1). Risk of unauthorized operations or information disclosure.

Original description

The description as published by the source.

This update for MozillaThunderbird fixes the following issues

Updated to Mozilla Thunderbird 140.10.1:

MFSA 2026-34 (bsc#1262230):

  • CVE-2026-6746: Use-after-free in the DOM: Core & HTML component.
  • CVE-2026-6747: Use-after-free in the WebRTC component.
  • CVE-2026-6748: Uninitialized memory in the Audio/Video: Web Codecs component.
  • CVE-2026-6749: Information disclosure due to uninitialized memory in the Graphics: Canvas2D component.
  • CVE-2026-6750: Privilege escalation in the Graphics: WebRender component.
  • CVE-2026-6751: Uninitialized memory in the Audio/Video: Web Codecs component.
  • CVE-2026-6752: Incorrect boundary conditions in the WebRTC component.
  • CVE-2026-6753: Incorrect boundary conditions in the WebRTC component.
  • CVE-2026-6754: Use-after-free in the JavaScript Engine component.
  • CVE-2026-6757: Invalid pointer in the JavaScript: WebAssembly component.
  • CVE-2026-6759: Use-after-free in the Widget: Cocoa component.
  • CVE-2026-6761: Privilege escalation in the Networking component.
  • CVE-2026-6762: Spoofing issue in the DOM: Core & HTML component.
  • CVE-2026-6763: Mitigation bypass in the File Handling component.
  • CVE-2026-6764: Incorrect boundary conditions in the DOM: Device Interfaces component.
  • CVE-2026-6765: Information disclosure in the Form Autofill component.
  • CVE-2026-6766: Incorrect boundary conditions in the Libraries component in NSS.
  • CVE-2026-6767: Other issue in the Libraries component in NSS.
  • CVE-2026-6769: Privilege escalation in th…

Source: OSV.dev (Open Source Vulnerabilities) OSV

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-2026:1741-1 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-2026:1741-1" on the vendor's site.

SUSE-SU-2026:1741-1
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 exposure identify 
    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 verification verify 
    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。

References

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