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CVE-2026-45225— Heym < 0.0.21 Path Traversal File Upload via upload_file()

Quick assessment

Affected
heymrun heym
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Heym是heymrun开源的一个AI原生工作流自动化平台。 Heym 0.0.21之前版本存在路径遍历漏洞，该漏洞源于文件上传端点存在路径遍历，可能导致经过身份验证的用户通过提供带有遍历序列的特制文件名，将攻击者控制的文件写入任意位置。

CVSS 7.6 · High EPSS 0.50% · P41

Affected Version Matrix 2

VendorProduct Version RangeStatus
heymrun heym < 0.0.21 affected
835843e6d2bf7d018cbb8e50f28f0426eaa20c84 unaffected
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I. Basic Information for CVE-2026-45225

Vulnerability Information
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Vulnerability Title
Heym < 0.0.21 Path Traversal File Upload via upload_file()
Source: CVE Program / CVE List V5
Vulnerability Description
Heym before 0.0.21 contains a path traversal vulnerability in the file upload endpoint that allows authenticated users to write attacker-controlled files to arbitrary locations by supplying a crafted filename with traversal sequences. Attackers can exploit the unvalidated filename parameter in the upload_file() handler to bypass path restrictions and write, read, or delete files outside the intended storage directory.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Heym 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Heym是heymrun开源的一个AI原生工作流自动化平台。 Heym 0.0.21之前版本存在路径遍历漏洞，该漏洞源于文件上传端点存在路径遍历，可能导致经过身份验证的用户通过提供带有遍历序列的特制文件名，将攻击者控制的文件写入任意位置。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
heymrun heym 0 ~ 0.0.21 -

II. Public POCs for CVE-2026-45225

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8355 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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Trigger conditions & impact
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Exploit chain & mitigation
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III. Intelligence Information for CVE-2026-45225

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Patches & Fixes for CVE-2026-45225 (3)

Vendor Advisories for CVE-2026-45225 (1)

Same Patch Batch · heymrun · 2026-05-12 · 3 CVEs total

CVE-2026-45227 8.8 HIGH Heym < 0.0.21 Sandbox Escape via Python Introspection
CVE-2026-45226 7.1 HIGH Heym < 0.0.21 Authorization Bypass in Workflow Execution

IV. Related Vulnerabilities

Same product: heym
Same vendor: heymrun
Same weakness: CWE-22

V. Comments for CVE-2026-45225

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