FiloSottile edwards25519 up to 1.1.0 initialization

Summaryinfo

A vulnerability classified as problematic has been found in FiloSottile edwards25519 up to 1.1.0. The affected element is an unknown function. The manipulation leads to initialization. This vulnerability is referenced as CVE-2026-26958. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in FiloSottile edwards25519 up to 1.1.0 and classified as problematic. This issue affects some unknown processing. The manipulation with an unknown input leads to a initialization vulnerability. Using CWE to declare the problem leads to CWE-665. The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. Impacted is availability. The summary by CVE is:

filippo.io/edwards25519 is a Go library implementing the edwards25519 elliptic curve with APIs for building cryptographic primitives. In versions 1.1.0 and earlier, MultiScalarMult produces invalid results or undefined behavior if the receiver is not the identity point. If (*Point).MultiScalarMult is called on an initialized point that is not the identity point, it returns an incorrect result. If the method is called on an uninitialized point, the behavior is undefined. In particular, if the receiver is the zero value, MultiScalarMult returns an invalid point that compares Equal to every other point. Note that MultiScalarMult is a rarely used, advanced API. For example, users who depend on filippo.io/edwards25519 only through github.com/go-sql-driver/mysql are not affected. This issue has been fixed in version 1.1.1.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-26958 since 02/16/2026. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 299681 (Linux Distros Unpatched Vulnerability : CVE-2026-26958), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.1.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch d1c650afb95fad0742b98d95f2eb2cf031393abb is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (299681). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• FiloSottile

Name

• edwards25519

Version

• 1.0
• 1.1.0

License

• open-source

Website

• Product: https://github.com/FiloSottile/edwards25519/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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