Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-86538— knowns before 0.30.0 Path Traversal via templateFile parameter

Quick assessment

Affected
knowns-dev knowns
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.

已知在 0.30.0 之前的版本中， 接口存在路径遍历漏洞，允许未认证的读取任意文件。攻击者可以在 参数中注入目录遍历序列（如 ），从而绕过路径限制，通过 JSON 响应读取凭据、配置文件等敏感文件。

CVSS 7.5 · High
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-86538

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
knowns before 0.30.0 Path Traversal via templateFile parameter
Source: CVE Program / CVE List V5
Vulnerability Description
knowns versions before 0.30.0 contain a path traversal vulnerability in the POST /api/templates/preview endpoint that allows unauthenticated attackers to read arbitrary files. Attackers can supply directory traversal sequences in the templateFile parameter to bypass path restrictions and read sensitive files like credentials and configuration through the JSON response.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
knowns-dev knowns 0 ~ 0.30.0 -

II. Public POCs for CVE-2026-86538

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-86538

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-86538 (1)

Vendor Advisories for CVE-2026-86538 (2)

Vendor Pages for CVE-2026-86538 (1)

Same Patch Batch · knowns-dev · 2026-09-07 · 8 CVEs total

CVE-2026-86543 9.8 CRITICAL knowns before 0.30.0 Unauthenticated Management API Exposure
CVE-2026-86542 9.1 CRITICAL knowns before 0.30.0 Path Traversal via Import Name
CVE-2026-86439 8.8 HIGH knowns before 0.30.0 Path Traversal via MCP doc and memory tools
CVE-2026-86541 8.3 HIGH knowns before 0.30.0 Path Traversal via code.replace MCP action
CVE-2026-86544 8.1 HIGH knowns before 0.30.0 Authorization Bypass via Misclassified Code Actions
CVE-2026-86540 7.8 HIGH knowns before 0.30.0 Arbitrary Code Execution via LSP Binary
CVE-2026-86539 7.2 HIGH knowns through 0.33.0 Server-Side Request Forgery via embedding-models endpoint

IV. Related Vulnerabilities

Same product: knowns
Same vendor: knowns-dev
Same weakness: CWE-22

V. Comments for CVE-2026-86538

No comments yet

Leave a comment