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CVE-2026-63187— Logto: OS command injection vulnerability exists in the Commitlint workflow

Quick assessment

Affected
logto-io logto
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.

logto-io logto是logto-io组织的一个身份认证和用户管理平台。 logto-io logto 1.40.1版本至1.41.0之前版本存在代码注入漏洞，该漏洞源于commitlint.yml直接将PR标题插入内联echo命令，攻击者可通过包含单引号的PR标题注入任意shell命令，从而干扰工作流执行。

CVSS 6.3 · Medium EPSS 0.39% · P31

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
logto-io logto >= 1.40.1, < 1.41.0 affected
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I. Basic Information for CVE-2026-63187

Vulnerability Information
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Vulnerability Title
Logto: OS command injection vulnerability exists in the Commitlint workflow
Source: CVE Program / CVE List V5
Vulnerability Description
Logto is the modern, open-source auth infrastructure for SaaS and AI apps. From 1.40.1 until 1.41.0, Logto's .github/workflows/commitlint.yml directly interpolated github.event.pull_request.title into the Commitlint on PR title step's inline echo command before piping the title to npx commitlint. A pull request title containing a single quote could terminate the echo string and append arbitrary shell commands on the GitHub Actions runner. The pull_request trigger used a read-only GITHUB_TOKEN and did not expose repository secrets, but injected commands could alter or disrupt the ephemeral workflow execution. This issue is fixed in version 1.41.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
logto-io logto 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
logto-io logto是logto-io组织的一个身份认证和用户管理平台。 logto-io logto 1.40.1版本至1.41.0之前版本存在代码注入漏洞，该漏洞源于commitlint.yml直接将PR标题插入内联echo命令，攻击者可通过包含单引号的PR标题注入任意shell命令，从而干扰工作流执行。
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
logto-io logto >= 1.40.1, < 1.41.0 -

II. Public POCs for CVE-2026-63187

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III. Intelligence Information for CVE-2026-63187

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Patches & Fixes for CVE-2026-63187 (2)

Vendor Advisories for CVE-2026-63187 (1)

Vendor Pages for CVE-2026-63187 (1)

Same Patch Batch · logto-io · 2026-08-19 · 3 CVEs total

CVE-2026-63188 8.7 HIGH logto-tunnel serves files outside --experience-path via path traversal
CVE-2026-62317 7.5 HIGH Logto: ReDoS via unescaped user input in email subaddressing regex (blockSubaddressing)

IV. Related Vulnerabilities

Same product: logto
Same vendor: logto-io
Same weakness: CWE-94

V. Comments for CVE-2026-63187

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