Vulnerability library
Security checkAugust 07, 2025

The Thinbus Javascript Secure Remote Password (SRP) Client Generates Fewer Bits of Entropy Than Intended

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Medium severitynpmthinbus-srp

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Description

A protocol compliance bug in thinbus-srp-npm versions prior to 2.0.1 causes the client to generate a fixed 252 bits of entropy instead of the intended bit length of the safe prime (defaulted to 2048 bits). RFC 5054 states in section 2.5.4 Client Key Exchange

The client key exchange message carries the client’s public value (A).

Recommendation

Update the thinbus-srp package to the latest compatible version. Followings are version details:

  • Affected version(s): < 2.0.1
  • Patched version(s): 2.0.1

References

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See something that needs correcting? Let us knowUpdated August 07, 2025