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CVE-2026-48120— Kakoune has a Critical RCE via Autorestore Backup Filename Injection

CVSS 8.6 · High EPSS 0.14% · P4

Possible ATT&CK Techniques 1AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProductVersion RangeStatus
mawwwkakoune< 2026.05.21affected
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I. Basic Information for CVE-2026-48120

Vulnerability Information
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Vulnerability Title
Kakoune has a Critical RCE via Autorestore Backup Filename Injection
Source: CVE Program / CVE List V5
Vulnerability Description
Kakoune is a code editor. Prior to version 2026.05.21, the bundled, enabled by default, `autorestore.kak` script can be exploited by malicious backup files leading to arbitrary kakoune and shell commands being executed by simply opening a file. Kakoune 2026.05.21 fixes the issue. As a workaround, add `autorestore-disable` to the user kakrc will disable the autorestore feature.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Maxime Coste Kakoune 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Maxime Coste Kakoune是Maxime Coste个人开发者的一款模态文本编辑器。 Maxime Coste Kakoune 2026.05.21之前版本存在输入验证错误漏洞，该漏洞源于捆绑的默认启用的autorestore.kak脚本可被恶意备份文件利用，打开文件时可执行任意kakoune和shell命令。
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

VendorProductAffected VersionsCPESubscribe
mawwwkakoune < 2026.05.21 -

II. Public POCs for CVE-2026-48120

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III. Intelligence Information for CVE-2026-48120

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Patches & Fixes for CVE-2026-48120 (1)

Vendor Advisories for CVE-2026-48120 (1)

IV. Related Vulnerabilities

Same weakness: CWE-74

V. Comments for CVE-2026-48120

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