CVE-2026-53704
High · 7.1CVSS
7.1
EPSS
0.5%
Published
Jun 15, 2026
CISA due date
—
The record
A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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