CVE-2026-18674Kong Mesh multi-zone: the global control plane attributes KDS-synced resources by an unvalidated in-band zone identifier
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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On a Kong Mesh global control plane, resources received over the zone-to-global KDS sync are attributed using the in-band, sender-controlled ControlPlane.Identifier rather than the authenticated zone identity derived from the connection. Authenticated zones can have the global control plane store and re-distribute those resources as belonging to another zone. The result is a cross-zone isolation bypass: the holder of a single enrolled zone's credential can inject, attribute, and overwrite resources in another zone's namespace mesh-wide. The root cause lives in Kuma's open-source KDS sync code, which Kong Mesh's control plane is built on.
- CVSS
- 7.0 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/SA:N
- Weakness (CWE)
- CWE-345, CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Kong
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Kong Inc. Kong Mesh kong:mesh (from the name) | before 2.7.29; from 2.8.0 before 2.9.19; from 2.10.0 before 2.11.18; from 2.12.0 before 2.12.14; from 2.13.0 before 2.13.10; from 2.14.0 before 2.14.2 | CNA record |
References
- https://github.com/kumahq/kuma/security/advisories/GHSA-m58j-fjmc-h3g4vendor-advisory
- https://github.com/kumahq/kuma/pull/17456patch
- https://github.com/kumahq/kuma/pull/17458patch
- https://github.com/kumahq/kuma/pull/17461patch
- https://github.com/kumahq/kuma/pull/17463patch
- https://github.com/kumahq/kuma/pull/17462patch
- https://github.com/kumahq/kuma/pull/17460patch
- https://github.com/kumahq/kuma/pull/17459patch
- https://developer.konghq.com/mesh/changelog/release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.