CVE-2026-8814

MEDIUM

Exifreader < 4.39.0 - Improper Handling of Highly Compressed Data (Data Amplification)

Title source: rule

Description

Versions of the package exifreader before 4.39.0 are vulnerable to Improper Handling of Highly Compressed Data (Data Amplification) due to decompressing PNG zTXt metadata without enforcing a built-in maximum decompressed output size. When asynchronous parsing is enabled, a crafted PNG file containing a highly compressed zTXt chunk can cause ExifReader to materialize a disproportionately large Comment value in memory.

References (3)

Core 3

Core References

https://security.snyk.io/vuln/SNYK-JS-EXIFREADER-16689340

https://gist.github.com/yuki-matsuhashi/cad1a45d936062438b4ab24613c34c55

https://github.com/mattiasw/ExifReader/commit/5f116128adc19f674902f8bf582bfe7dd0a36375

View Patch ZIP pw:eip

Scores

CVSS v3 5.3

EPSS 0.0039

EPSS Percentile 30.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-409

Status published

Products (2)

None/exifreader < 4.39.0

npm/exifreader 4.20.0 - 4.39.0npm

Published May 19, 2026

Tracked Since May 19, 2026