Integer Overflow Vulnerability in imgproxy from the Vendor imgproxy
CVE-2026-123614

9.3CRITICAL

Key Information:

Vendor

Imgproxy

Status
Imgproxy
Vendor
CVE Published:
8 November 2026

What is CVE-2026-123614?

imgproxy versions prior to 4.0.16 are susceptible to an integer overflow vulnerability within the ICO loader. This flaw allows remote attackers to manipulate the data_size parameter, potentially causing a heap buffer overflow. By submitting a specially crafted ICO image, attackers can corrupt heap memory, which may lead to process crashes or arbitrary code execution. Consequently, it is critical for users of imgproxy to upgrade to version 4.0.16 or later to mitigate this risk.

Affected Version(s)

imgproxy 4.0.0 < 4.0.16

imgproxy 4.0.16

References

https://github.com/imgproxy/imgproxy/security/advisories/...
vendor-advisory
https://www.vulncheck.com/advisories/imgproxy-4.0.0-befor...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

mateofumis
JasonPuglisi
JacobBrackett
.