CVE-2026-8814 | THREATINT

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.

PUBLISHED Reserved 2026-05-18 | Published 2026-05-19 | Updated 2026-05-19 | Assigner snyk

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P

Problem types

Improper Handling of Highly Compressed Data (Data Amplification)

Credits

Yuki Matsuhashi

References

security.snyk.io/vuln/SNYK-JS-EXIFREADER-16689340 exploit

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

gist.github.com/...tsuhashi/cad1a45d936062438b4ab24613c34c55

github.com/...ommit/5f116128adc19f674902f8bf582bfe7dd0a36375

cve.org (CVE-2026-8814)

nvd.nist.gov (CVE-2026-8814)

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