Vulnerability · Published May 19, 2026 · Assigned by snyk
CVE-2026-8814
Medium 5.3
In plain English
A medium-severity security flaw in exifreader. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | exifreader | 4.39.0 | GHSA-rr89-w3h9-m66j |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | exifreader | 0 – before 4.39.0 |
Weakness: CWE-409 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P