CVE-2026-18678
Kong Mesh: kumactl connects to the control plane without verifying the TLS certificate when no CA is configured
Description
When an operator adds an HTTPS control plane profile to kumactl without providing a CA certificate, kumactl disables TLS verification and sends API tokens over the unverified connection. An attacker on the network path between the operator and the control plane can intercept user or admin API tokens and then act against the control plane as that user.
INFO
Published Date :
Aug. 12, 2026, 7:17 p.m.
Last Modified :
Aug. 12, 2026, 7:17 p.m.
Remotely Exploit :
No
Source :
02762ae7-200e-4b20-9b2b-a77d5b8fc4cb
Affected Products
The following products are affected by CVE-2026-18678
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | MEDIUM | 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb | ||||
| CVSS 4.0 | MEDIUM | 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb |
Solution
- Provide a CA certificate when adding the profile.
- Ensure TLS verification is enabled.
- Use a secure connection for API tokens.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-18678.
| URL | Resource |
|---|---|
| https://developer.konghq.com/mesh/changelog/ | |
| https://github.com/kumahq/kuma/pull/16777 | |
| https://github.com/kumahq/kuma/security/advisories/GHSA-v95x-xhq5-4929 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-18678 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-18678
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-18678 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-18678 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb
Aug. 12, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Kong Inc.', 'modules': ['kumactl'], 'product': 'Kong Mesh', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2.7.26', 'versionType': 'semver'}, {'status': 'affected', 'version': '2.8.0', 'lessThan': '2.9.16', 'versionType': 'semver'}, {'status': 'affected', 'version': '2.10.0', 'lessThan': '2.11.14', 'versionType': 'semver'}, {'status': 'affected', 'version': '2.12.0', 'lessThan': '2.12.11', 'versionType': 'semver'}, {'status': 'affected', 'version': '2.13.0', 'lessThan': '2.13.7', 'versionType': 'semver'}], 'platforms': ['Linux'], 'defaultStatus': 'unaffected'}] Added Description When an operator adds an HTTPS control plane profile to kumactl without providing a CA certificate, kumactl disables TLS verification and sends API tokens over the unverified connection. An attacker on the network path between the operator and the control plane can intercept user or admin API tokens and then act against the control plane as that user. Added CVSS V4.0 AV:A/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-295 Added Reference https://developer.konghq.com/mesh/changelog/ Added Reference https://github.com/kumahq/kuma/pull/16777 Added Reference https://github.com/kumahq/kuma/security/advisories/GHSA-v95x-xhq5-4929