CVE-2026-40261— Composer 安全漏洞
一分钟漏洞结论
影响对象
composer composer
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Composer是Composer开源的一个应用软件。提供一个声明，管理和安装PHP项目的依赖项。 Composer 1.0至2.2.26版本和2.3至2.9.5版本存在安全漏洞，该漏洞源于Perforce::syncCodeBase和Perforce::generateP4Command方法存在命令注入问题，可能导致命令执行。
可能的 ATT&CK 技术 1 AI
T1190 · Exploit Public-Facing Application
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一、 漏洞 CVE-2026-40261 基础信息
漏洞信息
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Vulnerability Title
Composer has Command Injection via Malicious Perforce Reference
来源: CVE Program / CVE List V5
Vulnerability Description
Composer is a dependency manager for PHP. Versions 1.0 through 2.2.26 and 2.3 through 2.9.5 contain a command injection vulnerability in the Perforce::syncCodeBase() method, which appends the $sourceReference parameter to a shell command without proper escaping, and additionally in the Perforce::generateP4Command() method as in GHSA-wg36-wvj6-r67p / CVE-2026-40176, which interpolates user-supplied Perforce connection parameters (port, user, client) from the source url field without proper escaping. An attacker can inject arbitrary commands through crafted source reference or source url values containing shell metacharacters, even if Perforce is not installed. Unlike CVE-2026-40176, the source reference and url are provided as part of package metadata, meaning any compromised or malicious Composer repository can serve package metadata declaring perforce as a source type with malicious values. This vulnerability is exploitable when installing or updating dependencies from source, including the default behavior when installing dev-prefixed versions. This issue has been fixed in Composer 2.2.27 (2.2 LTS) and 2.9.6 (mainline). If developers are unable to immediately update, they can avoid installing dependencies from source by using --prefer-dist or the preferred-install: dist config setting, and only use trusted Composer repositories as a workaround.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
来源: CVE Program / CVE List V5
Vulnerability Title
Composer 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Composer是Composer开源的一个应用软件。提供一个声明，管理和安装PHP项目的依赖项。 Composer 1.0至2.2.26版本和2.3至2.9.5版本存在安全漏洞，该漏洞源于Perforce::syncCodeBase和Perforce::generateP4Command方法存在命令注入问题，可能导致命令执行。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2026-40261 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
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CVE-2026-40261 厂商安全公告 (1)
CVE-2026-40261 其他参考 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2026-40261
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