CVE-2026-18675: Kong Inc. Kong Mesh

Kong Mesh: control plane denial of service via a malformed dataplane token with a non-string JWT kid

CVSS 5.3 MediumEPSS 0.0056 · 46th percentile

Published by the CVE Program (CNA: Kong) at 12 Aug 2026, 18:36 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Kong Inc.	Kong Mesh	affected before 2.7.29 semver affected 2.8.0 to before 2.9.19 semver affected 2.10.0 to before 2.11.18 semver affected 2.12.0 to before 2.12.14 semver affected 2.13.0 to before 2.13.10 semver affected 2.14.0 to before 2.14.2 semver Other versions: unaffected

Identifiers

CVE-2026-18675

CNA

Kong

Weakness (CWE)

CWE-248 · CWE-704

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.3	Medium	4.0	CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N	CNA (Kong)

CISA KEV Not listed.
EPSS 0.0056, the 46th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 12 Aug 2026. New records show when each source confirmed them.

Sources

References from the CNA

github.com/kumahq/kuma/security/advisories/GHSA-5mxq-7xq4-3vx8 vendor-advisory
github.com/kumahq/kuma/pull/17465 patch
github.com/kumahq/kuma/pull/17468 patch
github.com/kumahq/kuma/pull/17467 patch
github.com/kumahq/kuma/pull/17471 patch
github.com/kumahq/kuma/pull/17469 patch
github.com/kumahq/kuma/pull/17470 patch
github.com/kumahq/kuma/pull/17472 patch
developer.konghq.com/mesh/changelog/ release-notes

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.