{"id":"CVE-2026-123616","title":"imgproxy 3.3.0 before 4.0.16 Memory Exhaustion DoS via ICO Loader","summary":"imgproxy from 3.3.0 before 4.0.16 contains an unbounded memory allocation vulnerability in the ICO loader that fails to validate the data_size field. Attackers can supply a crafted 23-byte ICO file declaring a ~4GB data_size to trigger m…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-789"],"vendor":"imgproxy","product":"imgproxy","affected":["imgproxy >= 3.3.0 < 4.0.16"],"published":"2026-11-08","updated":"2026-11-08","sourceUpdated":"2026-11-08T01:38:40.389Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-123616","references":[{"url":"https://github.com/imgproxy/imgproxy/security/advisories/GHSA-mmq5-xm89-9pfg","label":"GitHub Security Advisory (GHSA-mmq5-xm89-9pfg)"},{"url":"https://www.vulncheck.com/advisories/imgproxy-3.3.0-before-4.0.16-memory-exhaustion-dos-via-ico-loader","label":"VulnCheck Advisory: imgproxy 3.3.0 before 4.0.16 Memory Exhaustion DoS via ICO Loader"}],"tags":["cve.org"],"ingestedAt":"2026-11-08T02:43:18.638Z","slug":"CVE-2026-123616","body":"## Overview\n\nimgproxy from 3.3.0 before 4.0.16 contains an unbounded memory allocation vulnerability in the ICO loader that fails to validate the data_size field. Attackers can supply a crafted 23-byte ICO file declaring a ~4GB data_size to trigger memory exhaustion and worker crashes without authentication.\n\n## Affected\n\n- `imgproxy >= 3.3.0 < 4.0.16`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}