Low severity · published Feb 19, 2026
CVE-2026-26958
filippo.io/edwards25519 MultiScalarMult function produces invalid results or undefined behavior if receiver is not the identity
1.7
CVSS
0.4%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
filippo.io/edwards25519 · FiloSottile
< 1.1.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-26958
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-26958
github.com
https://github.com/FiloSottile/edwards25519/commit/d1c650afb95fad0742b98d95f2eb2cf031393abb
github.com
https://github.com/FiloSottile/edwards25519/releases/tag/v1.1.1
github.com
https://github.com/FiloSottile/edwards25519/security/advisories/GHSA-fw7p-63qq-7hpr
