CVE-2026-39831

Published: Mag 22, 2026 Last Modified: Mag 22, 2026
ExploitDB:
Other exploit source:
Google Dorks:

Description

AI Translation Available

The Verify() method for FIDO/U2F security key types ([email protected], [email protected]) did not check the User Presence flag. Signatures generated without physical touch were accepted, allowing unattended use of a hardware security key. To restore the previous behavior, return a 'no-touch-required' extension in Permissions.Extensions from PublicKeyCallback.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0001
Percentile
0,0th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

https://go.dev/cl/781662
https://go.dev/cl/781662
https://go.dev/issue/79566
https://go.dev/issue/79566
https://groups.google.com/g/golang-announce/c/a082jnz-LvI
https://groups.google.com/g/golang-announce/c/a082jnz-LvI
https://pkg.go.dev/vuln/GO-2026-5019
https://pkg.go.dev/vuln/GO-2026-5019