GHSA-vwf8-q6fw-4wcmPublished

Cilium vulnerable to information leakage via incorrect ReferenceGrant update logic in Gateway API

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cve-program · CVE-2024-42486

Published

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. In versions on the 1.15.x branch prior to 1.15.8 and the 1.16.x branch prior to 1.16.1, ReferenceGrant changes are not correctly propagated in Cilium's GatewayAPI controller, which could lead to Gateway resources being able to access secrets for longer than intended, or to Routes having the ability to forward traffic to backends in other namespaces for longer than intended. This issue has been patched in Cilium v1.15.8 and v1.16.1. As a workaround, any modification of a related Gateway/HTTPRoute/GRPCRoute/TCPRoute CRD (for example, adding any label to any of these resources) will trigger a reconciliation of ReferenceGrants on an affected cluster.

Source published: 16 Aug 2024 14:34:41 UTC
Source modified: 16 Aug 2024 14:54:16 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

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CVSS 3.1 · 5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

euvd · EUVD-2024-2669

Published

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datePublished: Aug 16, 2024, 2:34:41 PM

dateUpdated: Aug 16, 2024, 2:54:16 PM

Source published: Aug 16, 2024, 2:34:41 PM (timezone not stated)
Source modified: Aug 16, 2024, 2:54:16 PM (timezone not stated)
Saved here: 15 Nov 2026 02:33:33 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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EUVD CVSS 3.1 · 5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

nvd · CVE-2024-42486

Published

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NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-200

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published: 2024-08-16T15:15:28.777

lastModified: 2026-06-17T07:49:32.653

2 source CPE criteria · context only

cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*
cpe:2.3:a:cilium:cilium:1.16.0:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 16 Aug 2024 15:15:28 UTC
Source modified: 17 Jun 2026 07:49:32 UTC
Saved here: 25 Oct 2026 00:17:28 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

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CVSS 3.1 · [email protected] · Secondary · 5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS 3.1 · [email protected] · Primary · 7.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

osv · GHSA-vwf8-q6fw-4wcm

Published

### Impact Due to ReferenceGrant changes not being immediately propagated in Cilium's GatewayAPI controller, Gateway resources are able to access secrets in other namespaces after the associated ReferenceGrant has been revoked. This can lead to Gateways continuing to establish sessions using secrets that they should no longer have access to. ### Patches This issue was resolved in https://github.com/cilium/cilium/pull/34032. This issue affects: - Cilium v1.15 between v1.15.0 and v1.15.7 inclusive - Cilium v1.16.0 This issue has been patched in: - Cilium v1.15.8 - Cilium v1.16.1 ### Workarounds Any modification of a related Gateway/HTTPRoute/GRPCRoute/TCPRoute CRD (for example, adding any label to any of these resources) will trigger a reconciliation of ReferenceGrants on an affected cluster. ### Acknowledgements The Cilium community has worked together with members of Cure53 and Isovalent to prepare these mitigations. Special thanks to @sayboras for resolving this issue. ### For more information If you have any questions or comments about this advisory, please reach out on [Slack](https://docs.cilium.io/en/latest/community/community/#slack). If you think you have found a vulnerability affecting Cilium, we strongly encourage you to report it to our security mailing list at [[email protected]](mailto:[email protected]). This is a private mailing list for the Cilium security team, and your report will be treated as top priority.

Source published: 16 Aug 2024 18:45:20 UTC
Source modified: 10 Sep 2026 03:50:55 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

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CVSS_V3 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

Publisher rating · MODERATE

osv · GO-2024-3074

Published

Cilium leaks information via incorrect ReferenceGrant update logic in Gateway API in github.com/cilium/cilium

Source published: 19 Aug 2024 17:26:32 UTC
Source modified: 4 Feb 2026 02:38:56 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.