CVE-2026-26958Network attack vector

Incorrect cryptographic results via uninitialized receiver

Published Feb 19, 2026 · Updated Feb 19, 2026

Improper initialization in filippo.io/edwards25519 1.1.0 and earlier allows attackers to cause incorrect results via MultiScalarMult. Point.MultiScalarMult begins accumulation without resetting its receiver to the identity point, so prior or zero-value receiver state corrupts the output. Reachability requires an application to invoke this rarely used advanced API with a nonidentity or uninitialized receiver; indirect mysql users do not reach it.

CVSS severity3.7
Low
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper initialization in filippo.io/edwards25519 1.1.0 and earlier allows attackers to cause incorrect results via MultiScalarMult. Point.MultiScalarMult begins accumulation without resetting its receiver to the identity point, so prior or zero-value receiver state corrupts the output. Reachability requires an application to invoke this rarely used advanced API with a nonidentity or uninitialized receiver; indirect mysql users do not reach it.

The record

CVE
CVE-2026-26958
Published
Feb 19, 2026
Updated
Feb 19, 2026
Vendor
Filippo Valsorda
Product
filippo.io/edwards25519
Classifications
CWE-665
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Filippo Valsorda · filippo.io/edwards25519version=< 1.1.1

Published CVSS scores

3.7GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
1.7GitHub, Inc.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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-665Improper Initialization

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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