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CVE-2026-49447— Cosmos-Server's constellation public-devices endpoint accepts arbitrary bearer tokens

Quick assessment

Affected
azukaar Cosmos-Server
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.

Yann Stepienik Cosmos是Yann Stepienik个人开发者开源的一个自行托管家庭服务器的方法。旨在解决日益令人担忧的易受攻击的自托管应用程序和个人服务器的问题。 Yann Stepienik cosmos 0.22.18版本存在授权问题漏洞，该漏洞源于未对Authorization头中的令牌进行有效验证，可能导致攻击者获取Constellation设备元数据。

CVSS 5.3 · Medium EPSS 0.38% · P32

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
azukaar Cosmos-Server 0.22.18 affected
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I. Basic Information for CVE-2026-49447

Vulnerability Information
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Vulnerability Title
Cosmos-Server's constellation public-devices endpoint accepts arbitrary bearer tokens
Source: CVE Program / CVE List V5
Vulnerability Description
Cosmos provides users the ability self-host a home server by acting as a secure gateway to your application, as well as a server manager. In 0.22.18, `GET /cosmos/api/constellation/public-devices` discloses Constellation device metadata to a requester that supplies any non-empty Authorization header. The handler strips the string Bearer from the header but never validates the resulting token and never uses it in the database query. This vulnerability is fixed in 0.22.19.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Yann Stepienik cosmos 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Yann Stepienik Cosmos是Yann Stepienik个人开发者开源的一个自行托管家庭服务器的方法。旨在解决日益令人担忧的易受攻击的自托管应用程序和个人服务器的问题。 Yann Stepienik cosmos 0.22.18版本存在授权问题漏洞，该漏洞源于未对Authorization头中的令牌进行有效验证，可能导致攻击者获取Constellation设备元数据。
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
azukaar Cosmos-Server 0.22.18 -

II. Public POCs for CVE-2026-49447

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III. Intelligence Information for CVE-2026-49447

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Vendor Advisories for CVE-2026-49447 (1)

IV. Related Vulnerabilities

Same product: Cosmos-Server
Same vendor: azukaar
Same weakness: CWE-287