CVE-2026-53496

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 without confirming that fields required by the parsed box remain in the DataView. A valid ftyp box followed by an empty free or unknown box can cause an unchecked full-box version read, while a truncated extended-size box can make getBoxLength() and hasEmptyHighBits() read absent size fields. The resulting RangeError escapes the main parsing path and can abort an application request or worker when parse errors are not defensively caught, causing denial of service. This issue is fixed in version 4.40.1.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/mattiasw/ExifReader/commit/00878ca9df0e26480dda7a931c888048c9f7be45
https://github.com/mattiasw/ExifReader/releases/tag/v4.40.1
https://github.com/mattiasw/ExifReader/security/advisories/GHSA-g77h-45rf-hcx4
https://github.com/mattiasw/ExifReader/security/advisories/GHSA-g77h-45rf-hcx4

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-14 17:17

Updated : 2026-09-14 19:17

NVD link : CVE-2026-53496

Mitre link : CVE-2026-53496

CVE.ORG link : CVE-2026-53496

JSON object : View

Products Affected

No product.

CWE

CWE-248

Uncaught Exception

CWE-755

Improper Handling of Exceptional Conditions

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