ReservedCVE-2026-39043

    Ubuntu Gst-plugins-good1.0: security vulnerability (CVE-2026-39043)

    Published Sources: Debian LTS, Debian, Ubuntu

    What is affected, what to do

    It was discovered that GStreamer Good Plugins incorrectly handled certain Matroska files. An attacker could possibly use this issue to cause GStreamer Good Plugins to crash, resulting in a denial of service.

    The available sources name no fixed version. Check the vendor guidance in the references below.

    Affected
    • Ubuntu Gst-plugins-good1.0 1.20.3-0ubuntu1.7..*
    • Ubuntu Gst-plugins-good1.0 1.24.2-1ubuntu1.5..*
    • Ubuntu Gst-plugins-good1.0 1.28.2-2ubuntu0.1..*
    • Debian Gst-plugins-good1.0 1.22.0-5+deb12u4..*
    • Debian Gst-plugins-good1.0 1.26.2-1+deb13u2..*

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

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    Priority

    No value is available for this vulnerability.

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    CVSS v3

    No value is available for this vulnerability.

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    EPSS score

    No value is available for this vulnerability.

    Show all metrics
    Severity
    Reserved
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    64.88 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
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    Published

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    It was discovered that GStreamer Good Plugins incorrectly handled certain Matroska files. An attacker could possibly use this issue to cause GStreamer Good Plugins to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-39043) It was discovered that GStreamer Good Plugins incorrectly handled certain WAV files. An attacker could possibly use this issue to cause GStreamer Good Plugins to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-39044) It was discovered that GStreamer Good Plugins incorrectly handled certain WavPack audio files. An attacker could use this issue to cause GStreamer Good Plugins to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-53705)

    Source: Debian LTS Advisories, Debian Security Advisories, Ubuntu Security Notices

    Vendors and products

    Affected operating systems

    Affected operating systems
    Linuxdebiangst-plugins-good1.0bookworm
    Linuxdebiangst-plugins-good1.0trixie
    Linuxubuntugst-plugins-good1.0jammy
    Linuxubuntugst-plugins-good1.0noble
    Linuxubuntugst-plugins-good1.0resolute

    Included in the same advisory

    Included in the same advisory
    HighCVE-2026-53705Gstreamer1-plugins-good: gstreamer: heap buffer overflow in wavpack decoder via integer overflow7.6—
    Not ratedCVE-2026-39044Ubuntu Gst-plugins-good1.0: security vulnerability——
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    <a href="https://intel.neosec.eu/en/cve/CVE-2026-39043"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-39043.svg?lang=en" alt="CVE-2026-39043 – NEOSEC Intel" height="20"></a>