GStreamer MRF File Parser out-of-bounds write

Summaryinfo

A vulnerability classified as critical was found in GStreamer. This issue affects some unknown processing of the component MRF File Parser. Executing a manipulation can lead to out-of-bounds write. This vulnerability appears as CVE-2026-18295. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in GStreamer (version unknown). It has been declared as critical. This vulnerability affects an unknown function of the component MRF File Parser. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

GStreamer MRF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This 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 MRF files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29510.

This vulnerability was named CVE-2026-18295. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/06/2026).

The vulnerability scanner Nessus provides a plugin with the ID 339182 (RHEL 9 : gstreamer1-plugins-good (RHSA-2026:59152)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (339182). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Multimedia Processing Software

Name

• GStreamer

License

• open-source

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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