CVE-2026-53496

ExifReader (npm package exifreader), a JavaScript Exif metadata parser, is vulnerable to denial of service via crafted HEIC/AVIF files in versions prior to 4.40.1 . The ISO-BMFF parser in src/image-header-iso-bmff.js accepts an 8-byte box header without verifying that required fields remain withi...

CVE-2026-53496 ExifReader HEIC/AVIF ISO-BMFF parser throws uncaught RangeError on truncated boxes

ExifReader is a JavaScript Exif information parser. Prior to 4.40.1, ExifReader.load and the asynchronous file and URL loaders can pass attacker-supplied HEIC or AVIF data to the ISO-BMFF parser in src/image-header-iso-bmff.js, where findMetaBox and parseBox accept an eight-byte box header withou...

ExifReader HEIC/AVIF ISO-BMFF parser throws uncaught RangeError on truncated boxes

Summary ExifReader 4.40.0 can throw an uncaught RangeError: Offset is outside the bounds of the DataView while parsing crafted HEIC/AVIF files. The file only needs a valid leading ftyp box with a HEIC/AVIF major brand followed by a malformed ISO-BMFF box, such as an empty 8-byte free box or a...

GHSA-G77H-45RF-HCX4 ExifReader HEIC/AVIF ISO-BMFF parser throws uncaught RangeError on truncated boxes

Summary ExifReader 4.40.0 can throw an uncaught RangeError: Offset is outside the bounds of the DataView while parsing crafted HEIC/AVIF files. The file only needs a valid leading ftyp box with a HEIC/AVIF major brand followed by a malformed ISO-BMFF box, such as an empty 8-byte free box or a...