CVE-2026-45041 PUBLISHED

RustFS: Hard-coded RSA private key in license verifier permits arbitrary license forgery

Assigner: GitHub_M
Reserved: 08.05.2026 Published: 28.05.2026 Updated: 28.05.2026

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, crates/appauth/src/token.rs ships a 2048-bit RSA private key as a string constant named TEST_PRIVATE_KEY and uses it in production via parse_license() to "verify" license tokens. Because the key is embedded in every published source release and binary, anyone who can read the repository or extract it from the binary can mint arbitrary license tokens (any subject, any expiration). When the license Cargo feature is enabled, this defeats the entire license-enforcement mechanism. This vulnerability is fixed in 1.0.0-beta.2.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS Score: 8.7

Product Status

Vendor rustfs
Product rustfs
Versions
  • Version < 1.0.0-beta.2 is affected

References

Problem Types

  • CWE-321: Use of Hard-coded Cryptographic Key CWE