CVE-2026-47247
Description
A flaw was found in libheif, a HEIF and AVIF file format decoder and encoder. This vulnerability allows a remote attacker to leak process heap memory by uploading a specially crafted AVIF or HEIC image file to a server-side image processor. The attacker can then recover sensitive heap data, such as library function pointers or other secrets, from the transcoded output. This can lead to significant information disclosure.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Application Data
Frequently Asked Questions
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