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NVD Vulnerability Details :
CVE-2026-26963
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-20 Feb, 2026 | 00:16
Updated At-20 Feb, 2026 | 20:12

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.1MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Primary3.15.4MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 6.1
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Type: Primary
Version: 3.1
Base score: 5.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CPE Matches
cilium
cilium
>>cilium>>Versions from 1.18.0(inclusive) to 1.18.6(exclusive)
cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-863Primarysecurity-advisories@github.com
CWE ID: CWE-863
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/cilium/cilium/commit/88e28e1e62c0b1a02c3f0fc22d888ac9eefbe885security-advisories@github.com
Patch
https://github.com/cilium/cilium/pull/42892security-advisories@github.com
Issue Tracking
https://github.com/cilium/cilium/releases/tag/v1.18.6security-advisories@github.com
Release Notes
https://github.com/cilium/cilium/security/advisories/GHSA-5r23-prx4-mqg3security-advisories@github.com
Patch
Vendor Advisory
Hyperlink: https://github.com/cilium/cilium/commit/88e28e1e62c0b1a02c3f0fc22d888ac9eefbe885
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/cilium/cilium/pull/42892
Source: security-advisories@github.com
Resource:
Issue Tracking
Hyperlink: https://github.com/cilium/cilium/releases/tag/v1.18.6
Source: security-advisories@github.com
Resource:
Release Notes
Hyperlink: https://github.com/cilium/cilium/security/advisories/GHSA-5r23-prx4-mqg3
Source: security-advisories@github.com
Resource:
Patch
Vendor Advisory
Change History
0Changes found
Details not found