Improper Verification of Cryptographic Signature Affecting openshift4/ose-ovn-kubernetes-rhel9 package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.37% (30th percentile)

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  • Snyk IDSNYK-RHEL7-OPENSHIFT4OSEOVNKUBERNETESRHEL9-17893457
  • published8 Jul 2026
  • disclosed22 May 2026

Introduced: 22 May 2026

CVE-2026-39831  (opens in a new tab)
CWE-347  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 openshift4/ose-ovn-kubernetes-rhel9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openshift4/ose-ovn-kubernetes-rhel9 package and not the openshift4/ose-ovn-kubernetes-rhel9 package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The Verify() method for FIDO/U2F security key types (sk-ecdsa-sha2-nistp256@openssh.com, sk-ssh-ed25519@openssh.com) 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.

CVSS Base Scores

version 3.1