CVE-2026-18675
- Source
- https://cve.org/CVERecord?id=CVE-2026-18675
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18675.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-18675
- Aliases
-
- GHSA-5mxq-7xq4-3vx8
- Published
- 2026-08-12T18:36:17Z
- Modified
- 2026-09-02T03:30:42Z
- Severity
-
- 5.3 (Medium) CVSS_V4 - 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 CVSS Calculator
- Summary
- Kong Mesh: control plane denial of service via a malformed dataplane token with a non-string JWT kid
- Details
-
The dataplane token validator in kuma-cp performs an unchecked Go type assertion on the JWT kid header. A token whose kid is a JSON number decodes as a float64 and triggers a runtime panic before any signature, claims, or authorization check runs.
The panic terminates the entire kuma-cp process, HTTP API, the health and readiness endpoints, and xDS. Unauthenticated access to the dataplane gRPC server can trigger the crash with a malformed token
A single request is a transient interruption; sustaining an outage requires repeated requests.
- Database specific
{ "cna_assigner": "Kong", "cwe_ids": [ "CWE-248", "CWE-704" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18675.json" }- References
-
- https://developer.konghq.com/mesh/changelog/
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18675.json
- https://github.com/kumahq/kuma/security/advisories/GHSA-5mxq-7xq4-3vx8
- https://nvd.nist.gov/vuln/detail/CVE-2026-18675
- https://github.com/kumahq/kuma/pull/17465
- https://github.com/kumahq/kuma/pull/17467
- https://github.com/kumahq/kuma/pull/17468
- https://github.com/kumahq/kuma/pull/17469
- https://github.com/kumahq/kuma/pull/17470
- https://github.com/kumahq/kuma/pull/17471
- https://github.com/kumahq/kuma/pull/17472
Affected packages
Git / github.com/kumahq/kuma
Affected ranges
- Type
- GIT
- Repo
- https://github.com/kumahq/kuma
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedFixedIntroducedFixedIntroducedFixedIntroducedFixedIntroducedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "introduced": "0" }, { "fixed": "2.7.29" }, { "introduced": "2.8.0" }, { "fixed": "2.9.19" }, { "introduced": "2.10.0" }, { "fixed": "2.11.18" }, { "introduced": "2.12.0" }, { "fixed": "2.12.14" }, { "introduced": "2.13.0" }, { "fixed": "2.13.10" }, { "introduced": "2.14.0" }, { "fixed": "2.14.2" } ], "source": "AFFECTED_FIELD" }
Affected versions
0.*
0.1.0
0.1.1
0.1.2
0.2.0
0.2.0-rc1
0.2.1
0.2.2
0.2.2-rc1
0.2.3-rc4
0.3.0
0.3.0-rc1
0.3.0-rc2
0.3.1
0.3.2
0.3.2-rc2
0.4.0
0.4.0-rc1
0.4.0-rc2
0.5.0
0.5.0-rc1
0.5.0-rc2
0.5.1
0.6.0
0.7.0
0.7.1
Other
080-preview-1
080-preview-2
080-preview-3
1.*
1.0.0-rc1
1.0.0-rc2
1.2.0
1.2.0-rc1
1.4.0-rc1
1.5.0-rc1
2.*
2.11.0
2.11.1
2.11.2
2.11.3
2.11.4
2.11.5
2.11.6
2.11.7
2.12.0
2.12.1
2.12.2
2.12.3
2.7.0
2.7.1
2.7.10
2.7.11
2.7.12
2.7.13
2.7.14
2.7.15
2.7.16
2.7.17
2.7.18
2.7.19
2.7.2
2.7.3
2.7.4
2.7.5
2.7.6
2.7.7
2.7.8
2.7.9
2.9.0
2.9.1
2.9.10
2.9.11
2.9.12
2.9.13
2.9.14
2.9.15
2.9.16
2.9.17
2.9.18
2.9.2
2.9.3
2.9.4
2.9.5
2.9.6
2.9.7
2.9.8
2.9.9
v2.*
v2.11.10
v2.11.11
v2.11.12
v2.11.13
v2.11.14
v2.11.15
v2.11.16
v2.11.17
v2.11.8
v2.11.9
v2.12.10
v2.12.11
v2.12.12
v2.12.13
v2.12.4
v2.12.5
v2.12.6
v2.12.7
v2.12.8
v2.12.9
v2.13.0
v2.13.1
v2.13.2
v2.13.3
v2.13.4
v2.13.5
v2.13.6
v2.13.7
v2.13.8
v2.13.9
v2.14.0
v2.14.1
v2.7.20
v2.7.21
v2.7.22
v2.7.23
v2.7.24
v2.7.25
v2.7.26
v2.7.27
v2.7.28
v2.9.13