Description
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 memory exhaustion and worker crashes without authentication.
Published: 2026-11-08
Score: 8.7 High
EPSS: n/a
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Sun, 08 Nov 2026 01:45:00 +0000

Type Values Removed Values Added
Description 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 memory exhaustion and worker crashes without authentication.
Title imgproxy 3.3.0 before 4.0.16 Memory Exhaustion DoS via ICO Loader
First Time appeared Evilmartians
Evilmartians imgproxy
Weaknesses CWE-789
CPEs cpe:2.3:a:evilmartians:imgproxy:*:*:*:*:*:*:*:*
Vendors & Products Evilmartians
Evilmartians imgproxy
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Evilmartians Imgproxy
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-08T01:38:40.389Z

Reserved: 2026-11-06T01:04:42.201Z

Link: CVE-2026-123616

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-08T02:16:57.307

Modified: 2026-11-08T02:16:57.307

Link: CVE-2026-123616

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-789

    Memory Allocation with Excessive Size Value