{"id":"CVE-2026-8814","title":"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","summary":"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. Whe…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-409","CWE-409"],"published":"2026-05-19","updated":"2026-07-23","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-8814","references":[{"url":"https://gist.github.com/yuki-matsuhashi/cad1a45d936062438b4ab24613c34c55","label":"report@snyk.io"},{"url":"https://github.com/mattiasw/ExifReader/commit/5f116128adc19f674902f8bf582bfe7dd0a36375","label":"report@snyk.io"},{"url":"https://security.snyk.io/vuln/SNYK-JS-EXIFREADER-16689340","label":"report@snyk.io"},{"url":"https://security.snyk.io/vuln/SNYK-JS-EXIFREADER-16689340","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00465,"epssPercentile":0.39364,"ingestedAt":"2026-07-23T20:19:18.764Z","slug":"CVE-2026-8814","body":"## Overview\n\nVersions 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}