CVE-2026-123614

CRITICAL 9.8

imgproxy 4.0.0 before 4.0.16 Heap Buffer Overflow via ICO Loader Integer Overflow

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

imgproxy from 4.0.0 before 4.0.16 contains an integer overflow in the ICO loader that allows remote attackers to trigger a heap buffer overflow via a crafted data_size value. Attackers can submit a crafted ICO image whose data_size wraps the allocation in vips/icoload.c, corrupting heap memory to crash the process or achieve code execution.

CWE	CWE-122
Vendor	imgproxy
Product	imgproxy
Published	Nov 8, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

imgproxy / imgproxy

4.0.0 < 4.0.16

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/imgproxy/imgproxy/security/advisories/GHSA-hff9-5pqw-6w9f vulncheck.com: https://www.vulncheck.com/advisories/imgproxy-4.0.0-before-4.0.16-heap-buffer-overflow-via-ico-loader-integer-overflow

Credits

🔍 mateofumis 🔍 JasonPuglisi JacobBrackett