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CVE-2026-86539— knowns through 0.33.0 Server-Side Request Forgery via embedding-models endpoint

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.

以下是对该漏洞描述的专业中文翻译：在 0.33.0 及之前版本中，POST /api/embedding-models/test 端点存在服务端请求伪造（SSRF）漏洞，该端点会对调用者提供的目标地址发起出站请求，且未进行任何验证。攻击者可以通过观察传输层错误消息中泄露的网络可达性信息，枚举内部主机和云元数据端点。 --- 关键术语说明： Server-side request forgery：服务端请求伪造（SSRF, Server-Side Request Forgery） Outbound requests

CVSS 7.2 · High Updated Sep 08, 2026

Possible ATT&CK Techniques 3 AI

T1011 · Exfiltration Over Other Network Medium T1021 · Remote Services T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

knowns through 0.33.0 Server-Side Request Forgery via embedding-models endpoint

Source: CVE Program / CVE List V5

Vulnerability Description

knowns through 0.33.0 contains a server-side request forgery vulnerability in the POST /api/embedding-models/test endpoint that issues outbound requests to caller-supplied destinations without validation. Attackers can enumerate internal hosts and cloud metadata endpoints by observing transport error messages that reveal network reachability information.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

服务端请求伪造(SSRF)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
knowns-dev	knowns	0 ~ 0.33.0	-

II. Public POCs for CVE-2026-86539

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-86539

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Patches & Fixes for CVE-2026-86539 (2)

🔗 knowns/internal/server/routes/imports.go at v0.33.0 · knowns-dev/knowns · GitHub technical-description
🔗 knowns/internal/server/routes/embedding_models.go at v0.33.0 · knowns-dev/knowns · GitHub Read full article technical-description

Vendor Advisories for CVE-2026-86539 (2)

https://www.cve.org/CVERecord?id=CVE-2026-86539

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-2026-86538	7.5 HIGH	knowns before 0.30.0 Path Traversal via templateFile parameter

IV. Related Vulnerabilities

Same product: knowns

Same vendor: knowns-dev

Same weakness: CWE-918

V. Comments for CVE-2026-86539

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

CVE-2026-86539— knowns through 0.33.0 Server-Side Request Forgery via embedding-models endpoint

Quick assessment

Possible ATT&CK Techniques 3 AI

I. Basic Information for CVE-2026-86539

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-86539

III. Intelligence Information for CVE-2026-86539

Patches & Fixes for CVE-2026-86539 (2)

Vendor Advisories for CVE-2026-86539 (2)

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

IV. Related Vulnerabilities

V. Comments for CVE-2026-86539

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