Skip to main content

Wireguard CVE-2026-26963

MEDIUM
Incorrect Authorization (CWE-863)
2026-02-20 security-advisories@github.com GHSA-5r23-prx4-mqg3
Wireguard Cilium Red Hat Suse
6.1
CVSS 3.1 · GitHub Advisory
Share

Severity by source

GitHub Advisory PRIMARY
6.1 MEDIUM
AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
SUSE
MEDIUM
qualitative
Red Hat
6.1 MEDIUM
qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 22:04 vuln.today
Patch released
Feb 20, 2026 - 20:12 nvd
Patch available
CVE Published
Feb 20, 2026 - 00:16 nvd
MEDIUM 6.1

DescriptionGitHub Advisory

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Versions 1.18.0 through 1.18.5 will incorrectly permit traffic from Pods on other nodes when Native Routing, WireGuard and Node Encryption are enabled. This issue has been fixed in version 1.18.6.

AnalysisAI

Cilium versions 1.18.0-1.18.5 with Native Routing, WireGuard, and Node Encryption enabled incorrectly allow cross-node Pod traffic that should be blocked, enabling unauthorized network access between isolated workloads. An attacker with network access to pods on different nodes can bypass network segmentation policies to access restricted services. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Vulnerability AssessmentAI

Risk Assessment CVSS 6.1 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A remote attacker could exploit this vulnerability to compromise the affected system.
Remediation A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

Vendor StatusVendor

SUSE

Severity: Medium
Product Status
openSUSE Leap 15.6 Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP5 Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP6 Fixed
openSUSE Leap 15.5 Fixed

Share

CVE-2026-26963 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy