What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-28 · updated 2026-10-23
• Weakness: CWE-287

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.

Affected products

• azukaar Cosmos-Server: 0.22.18

References

• https://github.com/azukaar/Cosmos-Server/commit/59c561d686c8f9843b3e092b50f6346c481d8bbf
• https://github.com/azukaar/Cosmos-Server/releases/tag/v0.22.19
• https://github.com/azukaar/Cosmos-Server/security/advisories/GHSA-5fqm-cc34-fcf5
• https://github.com/azukaar/Cosmos-Server/security/advisories/GHSA-5fqm-cc34-fcf5

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