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CVE-2026-45805— Penpot: MCP REPL server binds to 0.0.0.0 with unauthenticated /execute endpoint — RCE

Quick assessment

Affected
penpot penpot
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.

penpot penpot是penpot公司开源的一款开源的设计和原型制作平台。 Penpot 2.15.0之前版本存在权限许可和访问控制问题漏洞，该漏洞源于CWE-749(权限许可和访问控制问题)，可能允许网络上的任何人执行服务器上的JavaScript代码。

CVSS 8.8 · High EPSS 0.38% · P29

Affected Version Matrix 1

VendorProduct Version RangeStatus
penpot penpot < 2.15.0 affected
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I. Basic Information for CVE-2026-45805

Vulnerability Information
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Vulnerability Title
Penpot: MCP REPL server binds to 0.0.0.0 with unauthenticated /execute endpoint — RCE
Source: CVE Program / CVE List V5
Vulnerability Description
Penpot is an open-source design tool for design and code collaboration. Prior to 2.15.0, Penpot MCP's mcp/packages/server/src/ReplServer.ts bound the ReplServer to 0.0.0.0:4403 and exposed an unauthenticated /execute endpoint that passed the code field to PluginBridge.executePluginTask(), allowing anyone on the network to execute JavaScript on the server. This issue is fixed in version 2.15.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
暴露危险的方法或函数
Source: CVE Program / CVE List V5
Vulnerability Title
Penpot 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
penpot penpot是penpot公司开源的一款开源的设计和原型制作平台。 Penpot 2.15.0之前版本存在权限许可和访问控制问题漏洞，该漏洞源于CWE-749(权限许可和访问控制问题)，可能允许网络上的任何人执行服务器上的JavaScript代码。
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
penpot penpot < 2.15.0 -

II. Public POCs for CVE-2026-45805

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
Success marker: VULNERABLE: unauthenticated /execute on 0.0.0.0:4403 executed arbitrary JS as uid=0 flag=PROOF_0730922deaa80032 and exfiltrated proof token from /flag.txt
Reproduction recording is a Pro+ exclusive
Watch the full sandbox build + live exploit recording for this CVE. Limited-time ¥499/mo.
Upgrade to Pro+
claude_code · 6365 chars
GitHub 复现环境（可 clone 直接跑）
Pro+ exclusive includes:
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III. Intelligence Information for CVE-2026-45805

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Patches & Fixes for CVE-2026-45805 (1)

Vendor Advisories for CVE-2026-45805 (1)

Proof of Concept for CVE-2026-45805 (1)

Vendor Pages for CVE-2026-45805 (1)

Same Patch Batch · penpot · 2026-07-15 · 3 CVEs total

CVE-2026-44986 9.9 CRITICAL Penpot: Pre-authenticated account takeover via team-invitation token + prepare-register-pr
CVE-2026-45806 7.7 HIGH Penpot: Authenticated SSRF in remote image import via create-file-media-object-from-url

IV. Related Vulnerabilities

Same product: penpot
Same vendor: penpot
Same weakness: CWE-749

V. Comments for CVE-2026-45805

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