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fix(deps): update module github.com/cilium/cilium to v1.18.6 [security]#2465

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fix(deps): update module github.com/cilium/cilium to v1.18.6 [security]#2465
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renovate/go-github.com-cilium-cilium-vulnerability

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@renovate renovate bot commented Feb 20, 2026

This PR contains the following updates:

Package Change Age Confidence
github.com/cilium/cilium v1.18.4v1.18.6 age confidence

Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

GitHub Vulnerability Alerts

CVE-2026-26963

Impact

Host Policies will incorrectly permit traffic from Pods on other nodes when all of the following configurations are enabled:

These options are disabled by default in Cilium.

Patches

This issue was fixed by #​42892.

This issue affects:

  • Cilium v1.18 between v1.18.0 and v1.18.5 inclusive

This issue is fixed in:

  • Cilium v1.18.6

Workarounds

There is currently no officially verified or comprehensive workaround for this issue. The following procedure has been validated strictly within a local 'Kind' environment and has not undergone exhaustive testing across diverse production architectures. Proceed with caution.

To mitigate the identified traffic bypass, ensure all ingress traffic from the cilium_wg0 interface is explicitly routed to cilium_host for policy enforcement. This ensures that host-level security policies are applied to decrypted WireGuard traffic. Execute the following configuration on each CiliumNode:

# IPv4 Traffic
ip rule add iif cilium_wg0 table 300
ip route add default dev cilium_host table 300

# IPv6 Traffic
ip -6 rule add iif cilium_wg0 table 300
ip -6 route add default dev cilium_net table 300

Acknowledgements

Special thanks to @​julianwiedmann for reporting the issue and helping with the resolution.

For more information

If you think you have found a vulnerability affecting Cilium, we strongly encourage you to report it to our security mailing list at security@cilium.io. This is a private mailing list for the Cilium security team, and your report will be treated as top priority. Please also address any comments or questions on this advisory to the same mailing list.


Release Notes

cilium/cilium (github.com/cilium/cilium)

v1.18.6: 1.18.6

Compare Source

Summary of Changes

Major Changes:

Minor Changes:

Bugfixes:

CI Changes:

Misc Changes:

Other Changes:

Docker Manifests

cilium

quay.io/cilium/cilium:v1.18.6@​sha256:42ec562a5ff6c8a860c0639f5a7611685e253fd9eb2d2fcdade693724c9166a4
quay.io/cilium/cilium:stable@sha256:42ec562a5ff6c8a860c0639f5a7611685e253fd9eb2d2fcdade693724c9166a4

clustermesh-apiserver

quay.io/cilium/clustermesh-apiserver:v1.18.6@​sha256:8ee142912a0e261850c0802d9256ddbe3729e1cd35c6bea2d93077f334c3cf3b
quay.io/cilium/clustermesh-apiserver:stable@sha256:8ee142912a0e261850c0802d9256ddbe3729e1cd35c6bea2d93077f334c3cf3b

docker-plugin

quay.io/cilium/docker-plugin:v1.18.6@​sha256:7931555ad713a48a28e4bf097402e0e398461dbf51b81cb8192558c5cb0dc48f
quay.io/cilium/docker-plugin:stable@sha256:7931555ad713a48a28e4bf097402e0e398461dbf51b81cb8192558c5cb0dc48f

hubble-relay

quay.io/cilium/hubble-relay:v1.18.6@​sha256:fb6135e34c31e5f175cb5e75f86cea52ef2ff12b49bcefb7088ed93f5009eb8e
quay.io/cilium/hubble-relay:stable@sha256:fb6135e34c31e5f175cb5e75f86cea52ef2ff12b49bcefb7088ed93f5009eb8e

operator-alibabacloud

quay.io/cilium/operator-alibabacloud:v1.18.6@​sha256:212c4cbe27da3772bcb952b8f8cbaa0b0eef72488b52edf90ad2b32072a3ca4c
quay.io/cilium/operator-alibabacloud:stable@sha256:212c4cbe27da3772bcb952b8f8cbaa0b0eef72488b52edf90ad2b32072a3ca4c

operator-aws

quay.io/cilium/operator-aws:v1.18.6@​sha256:47dbc1a5bd483fec170dab7fb0bf2cca3585a4893675b0324d41d97bac8be5eb
quay.io/cilium/operator-aws:stable@sha256:47dbc1a5bd483fec170dab7fb0bf2cca3585a4893675b0324d41d97bac8be5eb

operator-azure

quay.io/cilium/operator-azure:v1.18.6@​sha256:a57aff47aeb32eccfedaa2a49d1af984d996d6d6de79609c232e0c4cf9ce97a1
quay.io/cilium/operator-azure:stable@sha256:a57aff47aeb32eccfedaa2a49d1af984d996d6d6de79609c232e0c4cf9ce97a1

operator-generic

quay.io/cilium/operator-generic:v1.18.6@​sha256:34a827ce9ed021c8adf8f0feca131f53b3c54a3ef529053d871d0347ec4d69af
quay.io/cilium/operator-generic:stable@sha256:34a827ce9ed021c8adf8f0feca131f53b3c54a3ef529053d871d0347ec4d69af

operator

quay.io/cilium/operator:v1.18.6@​sha256:0e8903aa092025918761d24ae9a91af35baa5b6910b5d0e3feac91ab8a2bc65b
quay.io/cilium/operator:stable@sha256:0e8903aa092025918761d24ae9a91af35baa5b6910b5d0e3feac91ab8a2bc65b

v1.18.5: 1.18.5

Compare Source

Summary of Changes

Minor Changes:

Bugfixes:

CI Changes:

Misc Changes:

Other Changes:

Docker Manifests

cilium

quay.io/cilium/cilium:v1.18.5@​sha256:2c92fb05962a346eaf0ce11b912ba434dc10bd54b9989e970416681f4a069628
quay.io/cilium/cilium:stable@sha256:2c92fb05962a346eaf0ce11b912ba434dc10bd54b9989e970416681f4a069628

clustermesh-apiserver

quay.io/cilium/clustermesh-apiserver:v1.18.5@​sha256:952f07c30390847e4d9dfaa19a76c4eca946251ffbc4f6459946570f93ee72f1
quay.io/cilium/clustermesh-apiserver:stable@sha256:952f07c30390847e4d9dfaa19a76c4eca946251ffbc4f6459946570f93ee72f1

docker-plugin

quay.io/cilium/docker-plugin:v1.18.5@​sha256:db81fda86653d96ea40687dc314985f5f23d5b57719dd1cb0d151be2c7c8789f
quay.io/cilium/docker-plugin:stable@sha256:db81fda86653d96ea40687dc314985f5f23d5b57719dd1cb0d151be2c7c8789f

hubble-relay

quay.io/cilium/hubble-relay:v1.18.5@​sha256:17212962c92ff52384f94e407ffe3698714fcbd35c7575f67f24032d6224e446
quay.io/cilium/hubble-relay:stable@sha256:17212962c92ff52384f94e407ffe3698714fcbd35c7575f67f24032d6224e446

operator-alibabacloud

quay.io/cilium/operator-alibabacloud:v1.18.5@​sha256:2e60f635495eb2837296ced5475875c281a05765d5ddd644a05e126bbb080b3c
quay.io/cilium/operator-alibabacloud:stable@sha256:2e60f635495eb2837296ced5475875c281a05765d5ddd644a05e126bbb080b3c

operator-aws

quay.io/cilium/operator-aws:v1.18.5@​sha256:7608025d8b727a10f21d924d8e4f40beb176cefd690320433452816ad8776f52
quay.io/cilium/operator-aws:stable@sha256:7608025d8b727a10f21d924d8e4f40beb176cefd690320433452816ad8776f52

operator-azure

quay.io/cilium/operator-azure:v1.18.5@​sha256:126667e000267f893cb81042bf8a710ad2f219619eb9ce06e8949333bd325ac6
quay.io/cilium/operator-azure:stable@sha256:126667e000267f893cb81042bf8a710ad2f219619eb9ce06e8949333bd325ac6

operator-generic

quay.io/cilium/operator-generic:v1.18.5@​sha256:36c3f6f14c8ced7f45b40b0a927639894b44269dd653f9528e7a0dc363a4eb99
quay.io/cilium/operator-generic:stable@sha256:36c3f6f14c8ced7f45b40b0a927639894b44269dd653f9528e7a0dc363a4eb99

operator

quay.io/cilium/operator:v1.18.5@​sha256:c6806ee97ef35a79aa72d411bc7f12745a1ea684208853e7d13c8e7f84cbb606
quay.io/cilium/operator:stable@sha256:c6806ee97ef35a79aa72d411bc7f12745a1ea684208853e7d13c8e7f84cbb606


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renovate bot commented Feb 20, 2026

ℹ️ Artifact update notice

File name: KubeArmor/go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

  • 6 additional dependencies were updated

Details:

Package Change
golang.org/x/sys v0.37.0 -> v0.38.0
golang.org/x/crypto v0.43.0 -> v0.45.0
golang.org/x/net v0.46.0 -> v0.47.0
golang.org/x/sync v0.17.0 -> v0.18.0
golang.org/x/term v0.36.0 -> v0.37.0
golang.org/x/text v0.30.0 -> v0.31.0

@renovate renovate bot force-pushed the renovate/go-github.com-cilium-cilium-vulnerability branch 2 times, most recently from 71d51cc to e923fa1 Compare February 22, 2026 18:38
@renovate renovate bot force-pushed the renovate/go-github.com-cilium-cilium-vulnerability branch 5 times, most recently from 67c6a29 to b39b57a Compare March 11, 2026 06:20
@renovate renovate bot force-pushed the renovate/go-github.com-cilium-cilium-vulnerability branch from b39b57a to ea46f9c Compare March 12, 2026 04:11
@renovate renovate bot force-pushed the renovate/go-github.com-cilium-cilium-vulnerability branch from ea46f9c to f2ee409 Compare March 12, 2026 12:30
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