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

Quick assessment

Affected
mattiasw ExifReader
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

mattiasw ExifReader是mattiasw个人开发者开源的一款可读取图像EXIF元数据的前端组件库。 mattiasw ExifReader 4.40.1之前版本存在异常处理不当漏洞，该漏洞源于ExifReader.load()和异步文件及URL加载器将攻击者提供的HEIC或AVIF数据传递给src/image-header-iso-bmff.js中的ISO-BMFF解析器时，findMetaBox()和parseBox()接受八字节box头但未确认解析box所需字段仍存在于DataView

CVSS 5.3 · Medium EPSS 0.51% · P43

Affected Version Matrix 1

VendorProduct Version RangeStatus
mattiasw ExifReader < 4.40.1 affected
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I. Basic Information for CVE-2026-53496

Vulnerability Information
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Vulnerability Title
ExifReader HEIC/AVIF ISO-BMFF parser throws uncaught RangeError on truncated boxes
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未捕获的异常
Source: CVE Program / CVE List V5
Vulnerability Title
mattiasw ExifReader 异常处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
mattiasw ExifReader是mattiasw个人开发者开源的一款可读取图像EXIF元数据的前端组件库。 mattiasw ExifReader 4.40.1之前版本存在异常处理不当漏洞，该漏洞源于ExifReader.load()和异步文件及URL加载器将攻击者提供的HEIC或AVIF数据传递给src/image-header-iso-bmff.js中的ISO-BMFF解析器时，findMetaBox()和parseBox()接受八字节box头但未确认解析box所需字段仍存在于DataView
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
mattiasw ExifReader < 4.40.1 -

II. Public POCs for CVE-2026-53496

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III. Intelligence Information for CVE-2026-53496

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Patches & Fixes for CVE-2026-53496 (1)

Vendor Advisories for CVE-2026-53496 (1)

Vendor Pages for CVE-2026-53496 (1)

IV. Related Vulnerabilities

Same product: ExifReader
Same vendor: mattiasw
Same weakness: CWE-248