Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-123616— imgproxy 3.3.0 before 4.0.16 Memory Exhaustion DoS via ICO Loader

Quick assessment

Affected
imgproxy imgproxy
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

imgproxy 在 3.3.0 至 4.0.16（不含）的版本中存在一个无界内存分配漏洞，该漏洞位于 ICO 加载器中，因未对 data_size 字段进行验证所致。攻击者可提供一个精心构造的 23 字节 ICO 文件，声明约 4GB 的 data_size，从而在无需认证的情况下触发内存耗尽并导致工作进程崩溃。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1499.003 · Application Exhaustion Flood
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-123616

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
imgproxy 3.3.0 before 4.0.16 Memory Exhaustion DoS via ICO Loader
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
imgproxy imgproxy 3.3.0 ~ 4.0.16 -

II. Public POCs for CVE-2026-123616

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-123616

请登录查看更多情报信息。

Other References for CVE-2026-123616 (2)

Same Patch Batch · imgproxy · 2026-11-08 · 3 CVEs total

CVE-2026-123614 9.8 CRITICAL imgproxy 4.0.0 before 4.0.16 Heap Buffer Overflow via ICO Loader Integer Overflow
CVE-2026-123615 7.5 HIGH imgproxy before 4.0.17 Out-of-Bounds Write in ICO Loader

IV. Related Vulnerabilities

Same product: imgproxy
Same vendor: imgproxy
Same weakness: CWE-789