CVE-2026-46471
Description
A flaw was found in gstreamer1-plugins-good. An out-of-bounds read vulnerability exists in the isomp4 plugin when parsing custom metadata in MP4 files. By tricking a user or service into processing a specially crafted MP4 file, a remote attacker could cause the application to read past the end of an allocated heap buffer, resulting in information disclosure of sensitive memory contents.
Mitigation
If multimedia playback and processing are not required, remove the package containing the affected plugin:
# dnf remove gstreamer1-plugins-good
Caveat: Removing this package may prompt the removal of dependent desktop components or graphical media applications, potentially impacting the GNOME desktop environment. Verify package dependencies before proceeding. Headless server environments managed via terminal remain fully functional.
Additionally, apply operational controls by avoiding opening or processing untrusted MP4 files in applications that utilize the GStreamer framework.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.3 | N/A | 5.5 |
| Attack Vector | Network | N/A | Local |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | Required |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | Low | N/A | High |
| Integrity Impact | None | N/A | None |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
cve.org: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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