Denial of Service Vulnerability in ExifReader JavaScript Library by Mattias W.
CVE-2026-53496

5.3MEDIUM

Key Information:

Vendor

Mattiasw

Status
Exifreader
Vendor
CVE Published:
14 September 2026

What is CVE-2026-53496?

The ExifReader JavaScript library, used for parsing Exif information, is susceptible to a Denial of Service vulnerability in versions prior to 4.40.1. This vulnerability arises from the handling of attacker-supplied HEIC or AVIF data within the ISO-BMFF parser components. Specifically, functions like findMetaBox() and parseBox() do not adequately validate the required fields of the parsed data, potentially allowing invalid box structures to trigger unhandled RangeErrors. These parsing errors can ultimately lead to an application abort, thereby causing service disruptions. Users are strongly advised to upgrade to version 4.40.1 to mitigate this risk.

Affected Version(s)

ExifReader < 4.40.1

References

https://github.com/mattiasw/ExifReader/security/advisorie...
x_refsource_CONFIRM
https://github.com/mattiasw/ExifReader/commit/00878ca9df0...
x_refsource_MISC
https://github.com/mattiasw/ExifReader/releases/tag/v4.40.1
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.