🛡️ CVE-2025-64323 — kgateway

🟡 CVSS 5.3 — Medium ✅ No Known Exploit NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

kgateway is missing xDS authorization

Summary

The xDS interface in Kgateway versions 2.0.0 through 2.0.4 lacks authentication, allowing any client with unrestricted network access to the xDS port to retrieve potentially sensitive configuration data including certificate data, backend service information, routing rules, and cluster metadata.

Description

Impact

Kgateway xDS interface did not have authorization, so anonymous clients with unrestricted network access could gain access to the xDS data. This could expose sensitive information about your gateway configuration, certificate data, backend services, and routing topology to unauthorized parties.

Patches

Upgrade to version 2.0.5 or 2.1.0. These versions enable JWT-based authentication for the xDS interface by default, ensuring that only authenticated clients can access the xDS configuration data.

Workarounds

If immediate upgrade is not possible, NetworkPolicies can be used to block access to kgateway's xDS port, restricting network access to only trusted sources.

References

  • Fix in 2.1.0: https://github.com/kgateway-dev/kgateway/pull/12471
  • Backport to 2.0.5: https://github.com/kgateway-dev/kgateway/pull/12535
  • Related issue: https://github.com/kgateway-dev/kgateway/issues/10651

Credits

Kindly reported by @rikatz

For More Information

If you have any questions or comments about this advisory, please reach out in slack https://cloud-native.slack.com/archives/C080D3PJMS4

How this vulnerability can be exploited

This issue can be reached from an adjacent network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

Affected software

CVE-2025-64323 is recorded against 3 packages.

  • github.com/kgateway-dev/kgateway
  • github.com/kgateway-dev/kgateway/v2
  • unknown

Timeline and source

Published on 17 November 2025 and last revised on 3 March 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com (Advisory)
nvd.nist.gov (Advisory)
github.com (Fix)
github.com (Fix)
github.com (Report)

Details

Severity Medium
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-11-17
Updated 2026-08-12
Modified 2026-03-03

Affected Packages

Software From version Fixed in
github.com/kgateway-dev/kgateway — —
github.com/kgateway-dev/kgateway/v2 — —
unknown — —

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