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CVE-2026-77621— Vector: Arbitrary file write in the file sink via templated path (path traversal).

一分钟漏洞结论

影响对象
vectordotdev vector
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。

Vector is a high-performance observability data pipeline. From 0.10.0 until 0.57.0, the file sink renders its templated path from event fields and opens the result without confining it to an intended directory. When an untrusted source supplies an event field

CVSS 9.3 · Critical

影响版本矩阵 1

厂商产品 版本范围状态
vectordotdev vector >= 0.10.0, < 0.57.0 affected
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一、 漏洞 CVE-2026-77621 基础信息

漏洞信息

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Vulnerability Title
Vector: Arbitrary file write in the file sink via templated path (path traversal).
来源: CVE Program / CVE List V5
Vulnerability Description
Vector is a high-performance observability data pipeline. From 0.10.0 until 0.57.0, the file sink renders its templated path from event fields and opens the result without confining it to an intended directory. When an untrusted source supplies an event field used by the path template, the value can contain an absolute path or parent-directory traversal, causing Vector to create parent directories and create or overwrite files outside the intended location with the Vector process privileges. The resulting file write can modify sensitive files and can lead to code execution when a scheduled task, authorization file, or subsequently executed script is targeted. This issue is fixed in version 0.57.0.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H
来源: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
vectordotdev vector >= 0.10.0, < 0.57.0 -

二、漏洞 CVE-2026-77621 的公开POC

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三、漏洞 CVE-2026-77621 的情报信息

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CVE-2026-77621 补丁与修复 (2)

CVE-2026-77621 其他参考 (2)

同批安全公告 · vectordotdev · 2026-09-22 · 共 3 条

CVE-2026-77620 8.7 HIGH Vector: Unauthenticated denial of service in the `logstash` source via nested compressed f
CVE-2026-77619 8.7 HIGH Vector: Unauthenticated denial of service in the `logstash` source via unbounded memory al

IV. Related Vulnerabilities

Same product: vector
Same vendor: vectordotdev
Same weakness: CWE-22

V. Comments for CVE-2026-77621

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