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CVE-2026-18296 is a heap-based buffer overflow in GStreamer MRF file parsing. The flaw results from insufficient validation of attacker-controlled data length before copying data into a heap buffer. Processing a crafted MRF media file can corrupt heap memory and permit code execution in the context of the process using the vulnerable GStreamer component.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A GStreamer remote code execution vulnerability caused by a heap-based buffer overflow in MRF file parsing.
A GStreamer remote code execution vulnerability caused by a heap-based buffer overflow during MRF file parsing.
A GStreamer remote code execution vulnerability caused by a heap-based buffer overflow during MRF file parsing.
A GStreamer remote code execution vulnerability caused by a heap-based buffer overflow when parsing MRF files.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.