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CVE-2026-89065— Relative path traversal in the generated file manifest cleanup component in projen

Quick assessment

Affected
AWS projen
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.

projen是projen组织开源的一个项目生成工具。 projen 0.101.37之前版本存在路径遍历漏洞，该漏洞源于生成文件清单清理组件存在相对路径遍历，攻击者可通过项目合成期间使用的受版本控制生成文件清单中的特制条目，递归删除项目目录之外且运行projen环境可写的文件和目录。

CVSS 7.1 · High EPSS 0.18% · P8

Affected Version Matrix 1

VendorProduct Version RangeStatus
AWS projen < 0.101.37 affected
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I. Basic Information for CVE-2026-89065

Vulnerability Information
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Vulnerability Title
Relative path traversal in the generated file manifest cleanup component in projen
Source: CVE Program / CVE List V5
Vulnerability Description
Relative path traversal in the generated file manifest cleanup component in projen before 0.101.37 might allow context-dependent attackers to recursively delete files and directories outside the project directory that are writable by the environment running projen, via crafted entries in the version-controlled generated file manifest that is consumed during project synthesis. To remediate this issue, users should upgrade to version 0.101.37. The corrected containment check is automatically applied by the projen runtime next time you run it.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
相对路径遍历
Source: CVE Program / CVE List V5
Vulnerability Title
projen 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
projen是projen组织开源的一个项目生成工具。 projen 0.101.37之前版本存在路径遍历漏洞，该漏洞源于生成文件清单清理组件存在相对路径遍历，攻击者可通过项目合成期间使用的受版本控制生成文件清单中的特制条目，递归删除项目目录之外且运行projen环境可写的文件和目录。
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
AWS projen 0 ~ 0.101.37 -

II. Public POCs for CVE-2026-89065

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III. Intelligence Information for CVE-2026-89065

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Vendor Advisories for CVE-2026-89065 (2)

Vendor Pages for CVE-2026-89065 (1)

Same Patch Batch · AWS · 2026-09-11 · 5 CVEs total

CVE-2026-89066 7.8 HIGH OS command injection in the task synthesis component in projen
CVE-2026-18061 5.9 MEDIUM Improper Restriction of XML External Entity References in AWS Advanced JDBC Wrapper Remote
CVE-2026-89090 5.9 MEDIUM Denial of service in the event stream header decoder in AWS SDK for Go v2
CVE-2026-89332 5.5 MEDIUM Kiro IDE Sensitive Workspace Data Exfiltration via Agent-Written Workspace Configuration

IV. Related Vulnerabilities

Same product: projen
Same vendor: AWS
Same weakness: CWE-23