GStreamer RealMedia demuxer Vulnerability in GStreamer Plugins
CVE-2026-53703

7.1HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Vendor
CVE Published:
15 June 2026

What is CVE-2026-53703?

A vulnerability exists within the GStreamer RealMedia demuxer that affects the parsing of MDPR (media properties) chunks when handling RealMedia files. The demuxer does not properly validate the size of the MDPR chunk, leading to the potential reading of data beyond buffer limits. This oversight can cause application crashes and might inadvertently expose limited metadata, raising concerns regarding information disclosure in maliciously crafted files.

References

https://access.redhat.com/security/cve/CVE-2026-53703
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2487613
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Tianshuo Han for reporting this issue.
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