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CVE-2026-117602— Electrum before 4.7.2 External Plugin Authorization Bypass Local Code Execution

Quick assessment

Affected

spesmilo electrum

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.

Electrum 4.6.0 至 4.7.2 之前的版本中，外部插件加载器存在授权绕过漏洞：当配置文件将某个插件标记为“已启用”时，该加载器会执行其模块，但不会验证该插件的密码签名。因此，任何拥有 Electrum 数据目录写入权限的恶意本地进程均可在文件夹中植入恶意插件代码并将其标记为启用，从而在 Electrum 进程内实现任意代码执行。

CVSS 8.4 · High Updated Oct 27, 2026

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 2

Vendor	Product	Version Range	Status
spesmilo	electrum	`< 4.7.2`	affected
		`4.7.2`	unaffected

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Vulnerability Information

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Vulnerability Title

Electrum before 4.7.2 External Plugin Authorization Bypass Local Code Execution

Source: CVE Program / CVE List V5

Vulnerability Description

Electrum 4.6.0 before 4.7.2 contains an authorization bypass in the external plugin loader, which executes a plugin's __init__.py module when the plugin is marked enabled in the config file, without verifying its plugin-password signature. A rogue local process with write access to the Electrum data directory can place plugin code in the plugins/ folder and mark it enabled, causing arbitrary code execution inside the Electrum process.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

密码学签名的验证不恰当

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
spesmilo	electrum	0 ~ 4.7.2	-

II. Public POCs for CVE-2026-117602

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-117602

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Patches & Fixes for CVE-2026-117602 (2)

Vendor Advisories for CVE-2026-117602 (2)

https://www.cve.org/CVERecord?id=CVE-2026-117602

Same Patch Batch · spesmilo · 2026-10-27 · 3 CVEs total

CVE-2026-117601	7.5 HIGH	Electrum before 4.8.3 Missing Signature Verification of Mempool Transactions
CVE-2026-117603	4.3 MEDIUM	Electrum before 4.7.2 Nostr Wallet Connect Plugin Daily Spending Limit Bypass

IV. Related Vulnerabilities

Same product: electrum

Same vendor: spesmilo

Same weakness: CWE-347