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PatchSiren cyber security CVE debrief

CVE-2026-3082 GStreamer CVE debrief

CVE-2026-3082 is a high-severity vulnerability in the GStreamer library, specifically in the JPEG parser. The vulnerability is caused by a lack of proper validation of user-supplied data, leading to a heap-based buffer overflow. This allows remote attackers to execute arbitrary code on affected installations of GStreamer. The vulnerability has a CVSS score of 7.8 and is considered HIGH severity. The issue was publicly disclosed on March 16, 2026, and has since been modified on June 30, 2026.

Vendor
GStreamer
Product
Unknown
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-03-16
Original CVE updated
2026-07-21
Advisory published
2026-03-16
Advisory updated
2026-07-21

Who should care

Developers and administrators using GStreamer in their applications should be aware of this vulnerability and take steps to mitigate it. This vulnerability can be exploited remotely, and attackers can leverage it to execute code in the context of the current process. GStreamer users should prioritize patching this vulnerability to prevent potential attacks.

Technical summary

The vulnerability exists within the processing of Huffman tables in the GStreamer JPEG parser. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. The vulnerability has been publicly disclosed and has a CVSS score of 7.8.

Defensive priority

This vulnerability has a high CVSS score of 7.8 and can be exploited remotely, making it a high-priority issue for GStreamer users. Administrators should prioritize patching this vulnerability to prevent potential attacks.

Recommended defensive actions

  • Patch GStreamer installations to the latest version
  • Review and update GStreamer configurations to ensure secure usage
  • Monitor GStreamer installations for potential attacks
  • Implement compensating controls to detect and prevent exploitation
  • Perform thorough inventory checks to identify affected systems

Evidence notes

The vulnerability was publicly disclosed on March 16, 2026, and has since been modified on June 30, 2026. The CVSS score is 7.8, and the vulnerability is considered HIGH severity. The issue exists within the processing of Huffman tables in the GStreamer JPEG parser.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-3082 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-3082

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-3082 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-3082

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Mitigation or vendor reference

    Unverified legacy reference

    URL: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/7d3c258ed928cf59d126c8ea926b185f046f444c

    [email protected] - Vendor Advisory

  • Mitigation or vendor reference

    Unverified legacy reference

    URL: https://www.zerodayinitiative.com/advisories/ZDI-26-163/

    [email protected] - Third Party Advisory

  • Source reference

    Unverified legacy reference

    URL: https://access.redhat.com/errata/RHSA-2026:19024

    0b0ca135-0b70-47e7-9f44-1890c2a1c46c

  • Source reference

    Unverified legacy reference

    URL: https://access.redhat.com/errata/RHSA-2026:19180

    0b0ca135-0b70-47e7-9f44-1890c2a1c46c

  • Source reference

    Unverified legacy reference

    URL: https://access.redhat.com/errata/RHSA-2026:6259

    0b0ca135-0b70-47e7-9f44-1890c2a1c46c

  • Source reference

    Unverified legacy reference

    URL: https://access.redhat.com/errata/RHSA-2026:6300

    0b0ca135-0b70-47e7-9f44-1890c2a1c46c

  • Source reference

    Unverified legacy reference

    URL: https://access.redhat.com/errata/RHSA-2026:6750

    0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.