1.7

CVE-2026-26958: filippo.io/edwards25519 MultiScalarMult function produces invalid results or undefined behavior if receiver is not the identity

Deferred
AliasesUBUNTU-CVE-2026-26958DEBIAN-CVE-2026-26958CGA-23jw-gw9c-h6w3
Published 19-02-2026Last modified 20-02-2026

Vulnerability summary

CVE-2026-26958 is a low (CVSS 1.7) Improper Initialization vulnerability in filosottile filippo.io/edwards25519. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 35.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 1.7, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
1.7/10
010
Low · v4.0 (CVE.org)
EPSS score
0.41%
0%100%
Low · -0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 14
OPENSUSE-SU-2026:10235-1OPENSUSE-SU-2026:10601-1OPENSUSE-SU-2026:10618-1OPENSUSE-SU-2026:11650-1OPENSUSE-SU-2026:12300-1OPENSUSE-SU-2026:20386-1

Timeline

  1. 19-02-2026
    PublishedVulnerability first disclosed.
  2. 20-02-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

Decrease -0.03 pp

From 0.45% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard200 products
  • aactl< 0.4.12-r43
  • age< 1.3.1-r3
  • age-fips< 1.3.1-r3
  • agentbeat< 9.2.4-r3
  • agentbeat-fips< 9.2.4-r3

1 vendor · 200 products · Showing 200 of 408

References

9 links