CVE-2026-46471 GStreamer CVE debrief

Who should care

Defenders and administrators of systems using GStreamer's gst-plugins-good, especially those handling MP4 files, should assess exposure and prioritize verification and patching. The vulnerability may impact applications using the affected plugin, and defenders should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Defenders should also plan vendor-supported updates or mitigations through normal

Why it matters

CVE-2026-46471 is a vulnerability in GStreamer's gst-plugins-good that may allow disclosure of heap memory contents when parsing MP4 files. Defenders should assess exposure, prioritize verification and patching, and monitor for exploitation attempts.

• Potential disclosure of heap memory contents
• Need to verify if applications are using affected versions
• Prioritize patching or updating to version 1.28.2 or later
• Monitor for potential exploitation attempts

Technical summary

The qtdemux_parse_uuid function in the isomp4 plugin of GStreamer's gst-plugins-good before version 1.28.2 may read past the end of a heap-allocated buffer when parsing an MP4 file. This could potentially disclose heap memory contents. The vulnerability is related to the handling of MP4 files and could allow attackers to access sensitive information. The affected plugin is used in various applications, and defenders should assess exposure and prioritize verification and patching. The vulnerability has been reported in GStreamer's gst-plugins-good before version 1.28.2.

Defensive priority

Assess exposure and prioritize verification of affected systems, especially those handling MP4 files.

Recommended defensive actions

• Assess exposure to the vulnerable plugin
• Verify if applications handling MP4 files are using affected versions
• Prioritize patching or updating to version 1.28.2 or later
• Monitor for potential exploitation attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE Program record and NVD vulnerability detail provide official information on the vulnerability. Additional details are available from GStreamer's security advisory and Atredis Partners' advisory. The vulnerability has been reported in GStreamer's gst-plugins-good before version 1.28.2. Limited source information is available, and defenders should verify the vulnerability's impact on their systems.

Sources and references

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.