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CVE-2026-69098— kotaemon 0.12.0 Unauthenticated Remote Code Execution via Insecure Deserialization

Quick assessment

Affected
Cinnamon kotaemon
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cinnamon kotaemon是Cinnamon组织开源的一个文档协作与问答平台。 Cinnamon kotaemon 0.12.0及之前版本存在反序列化注入漏洞，该漏洞源于check_connection端点存在不安全的反序列化问题，允许未经验证的攻击者通过提供带有__type__字段的特制YAML/JSON输入实例化任意Python类，将__type__字段覆盖为subprocess.check_output和任意参数，从而导致远程代码执行。

CVSS 9.8 · Critical EPSS 0.91% · P58

Affected Version Matrix 1

VendorProduct Version RangeStatus
Cinnamon kotaemon ≤ 0.12.0 affected
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I. Basic Information for CVE-2026-69098

Vulnerability Information
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Vulnerability Title
kotaemon 0.12.0 Unauthenticated Remote Code Execution via Insecure Deserialization
Source: CVE Program / CVE List V5
Vulnerability Description
kotaemon through 0.12.0 contains an insecure deserialization vulnerability in the check_connection endpoint that allows unauthenticated attackers to instantiate arbitrary Python classes by supplying crafted YAML/JSON input with a __type__ field. Attackers can exploit this to override the __type__ field with subprocess.check_output and arbitrary arguments, achieving remote code execution with application process privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Cinnamon kotaemon 反序列化漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cinnamon kotaemon是Cinnamon组织开源的一个文档协作与问答平台。 Cinnamon kotaemon 0.12.0及之前版本存在反序列化注入漏洞，该漏洞源于check_connection端点存在不安全的反序列化问题，允许未经验证的攻击者通过提供带有__type__字段的特制YAML/JSON输入实例化任意Python类，将__type__字段覆盖为subprocess.check_output和任意参数，从而导致远程代码执行。
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
Cinnamon kotaemon 0 ~ 0.12.0 -

II. Public POCs for CVE-2026-69098

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 6079 chars
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III. Intelligence Information for CVE-2026-69098

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Vendor Advisories for CVE-2026-69098 (1)

Proof of Concept for CVE-2026-69098 (1)

IV. Related Vulnerabilities

Same product: kotaemon
Same vendor: Cinnamon
Same weakness: CWE-502

V. Comments for CVE-2026-69098

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