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CVE-2026-18297 GStreamer CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-20T17:17:26.507Z and has not been modified since then. This CVE-2026-18297 vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of OGG files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29584. GStreamer users and administrators should be aware of this vulnerability and take steps to mitigate it. This includes reviewing their environment for affected installations and applying patches or mitigations as necessary. Security teams should prioritize patching and monitor for suspicious activity related to OGG file parsing.

Vendor
GStreamer
Product
Unknown
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-20
Original CVE updated
2026-09-02
Advisory published
2026-08-20
Advisory updated
2026-09-02

Who should care

GStreamer users and administrators should be aware of this vulnerability and take steps to mitigate it. This includes reviewing their environment for affected installations and applying patches or mitigations as necessary. Security teams should prioritize patching and monitor for suspicious activity related to OGG file parsing.

Technical summary

The vulnerability exists within the parsing of OGG files in GStreamer, caused by a lack of proper validation of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. GStreamer users should prioritize patching this vulnerability to prevent potential code execution. This issue allows attackers to execute arbitrary code. Evidence is limited to public sources and may not reflect the full scope of affected systems. Defenders should verify OGG file parsing in their environment and review for suspicious activity.

Defensive priority

GStreamer users should prioritize patching this vulnerability to prevent potential code execution.

Recommended defensive actions

  • Apply patches from the vendor advisory
  • Restrict access to GStreamer installations
  • Monitor for suspicious OGG file parsing activity
  • Review compensating controls for exposed systems
  • Check relevant monitoring, detection, and logs for exposed assets
  • Track exceptions, retest remediated assets
  • Review the supplied official advisory or CVE record

Evidence notes

The vulnerability exists within the parsing of OGG files in GStreamer, caused by a lack of proper validation of user-supplied data prior to copying it to a stack-based buffer. This issue allows attackers to execute arbitrary code. Evidence is limited to public sources and may not reflect the full scope of affected systems. Defenders should verify OGG file parsing in their environment and review for suspicious activity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-18297 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-18297

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

  • CVE-2026-18297 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-18297

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

Supplemental 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.