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GHSA-2x5j-vhc8-9cwm

CIRCL-Fourq: Missing and wrong validation can lead to incorrect results

Source: GitHub Advisory Database (reviewed) Low CVE-2025-8556

Packages

EcosystemPackageAffectedFixed in
Go github.com/cloudflare/circl < 1.6.1 1.6.1

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact The CIRCL implementation of FourQ fails to validate user-supplied low-order points during Diffie-Hellman key exchange, potentially allowing attackers to force the identity point and compromise session security. Moreover, there is an incorrect point validation in ScalarMult can lead to incorrect results in the isEqual function and if a point is on the curve. ### Patches Version 1.6.1 (https://github.com/cloudflare/circl/tree/v1.6.1) mitigates the identified issues. We acknowledge Alon Livne (Botanica Software Labs) for the reported findings.

References

External links from the advisory. They lead to third-party sites.