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Advisory record · GHSA-fw7p-63qq-7hpr

filippo.io/edwards25519 MultiScalarMult produces invalid results or undefined behavior if receiver is not the identity

CVSS 1.7 LowEPSS 0.0042 · 36th percentile

Published by the GitHub Advisory Database at 18 Feb 2026, 22:37 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
filippo.io/edwards25519Go<1.1.11.1.1
Identifiers
GHSA-fw7p-63qq-7hpr · CVE-2026-26958 · GO-2026-4503
Weakness (CWE)
CWE-665
Tags
Published
18 Feb 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

filippo.io/edwards25519 versions before 1.1.1 are affected. Calling the MultiScalarMult method on a point that is not the identity point gives an incorrect result, and calling it on an uninitialized zero-value point gives an invalid point that compares equal to every point. The source does not describe a specific attacker action, and the bug is not stated to be reachable by remote input. Upgrade to version 1.1.1 or later.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
1.7 Low 4.0 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0042, the 36th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:14 UTC First seen by agentprime
  2. 31 Oct 2026, 14:14 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.