CVE-2026-44936

Missing filtering when the helmRepoURLRegex field isn't set on a GitRepo resource in SUSE Rancher Fleet's bundle reader in 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.15 forwards Helm authentication credentials (BasicAuth) to any URL specified in the helm.repo field of a fleet.yaml file, allowing attackers able to push to fleet monitored git repos to leak helm access credentials.

Missing filtering when the helmRepoURLRegex field isn't set on a GitRepo resource in SUSE Rancher Fleet's bundle reader in 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.15 forwards Helm authentication credentials (BasicAuth) to any URL specified in the helm.repo field of a fleet.yaml file, allowing attackers able to push to fleet monitored git repos to leak helm access credentials.

Impact

A vulnerability has been identified in Fleet when the helmRepoURLRegex field isn't set on a GitRepo resource. Fleet's bundle reader forwards Helm authentication credentials (BasicAuth) to any URL specified in the helm.repo field of a fleet.yaml file.

An attacker with git push access to a Fleet-monitored repository can exploit this behavior by specifying a malicious URL in helm.repo. This causes the Fleet controller to send the configured Helm repository credentials to the attacker’s server.

As a result, the attacker can capture the username and password that an administrator configured to access a private Helm chart repository. However, the response body from the attacker's server isn't included in the error message (this behavior was fixed in Fleet v0.13.3 and later), which prevents additional internal data from leaking through the status condition.

The final severity of this vulnerability depends on the specific permissions of the leaked credentials.

Fleet recommends you to:

1. Review your system for potentially leaked credentials.
2. Replace any credentials that might be compromised.

Please consult the associated MITRE ATT&CK - Technique - Stored Data Manipulation and MITRE ATT&CK - Technique - Steal Application Access Token for further information about this category of attack.

Patches

To resolve this vulnerability, upgrade to a patched version of Fleet. The patched version of Fleet now requires you to set the helmRepoURLRegex field on the GitRepo. If the helmRepoURLRegex is empty or missing, Fleet won’t send credentials, regardless of the URL specified in fleet.yaml.

When you upgrade, a Helm pre-upgrade job automatically migrates existing GitRepo resources that have helmSecretName or helmSecretNameForPaths configured but lack a helmRepoURLRegex. The migration job performs the following actions:

The job extracts the scheme and host from the Helm repository URLs already stored in the resource's Bundles. For example, a GitRepo with Bundles referencing https://charts.example.com/stable receives helmRepoURLRegex: "^https://charts\.example\.com/". This limits credential forwarding to the origins already in use before the upgrade. Migrated resources are annotated with fleet.cattle.io/helm-regex-auto-migrated: "true" so you can easily audit them.

If no Bundles with Helm repository URLs exist during the migration (for example, if the GitRepo has never successfully synced), helmRepoURLRegex remains empty and credentials aren't forwarded. You must set this field manually before Fleet will send credentials.

The migration job runs only once per installation and records its status in a ConfigMap named fleet-helm-url-regex-migrated in the Fleet system namespace. Any GitRepo resources you create after the upgrade require an explicit helmRepoURLRegex to forward credentials.

Patched versions of Fleet include releases v0.15.2, v0.14.6, 0.13.11, and v0.12.15.

Workarounds

If you cannot immediately upgrade to a patched version, use the following methods to mitigate the risk and audit your environment. Set helmRepoURLRegex on all GitRepo resources that use helmSecretName. Ensure the regular expression matches only your legitimate Helm repository URL.

Example configuration:

apiVersion: fleet.cattle.io/v1alpha1
kind: GitRepo
metadata:
  name: my-app
  namespace: fleet-local
spec:
  repo: https://git.example.com/org/my-app.git
  helmSecretName: helm-creds
  helmRepoURLRegex: "^https://charts\\.example\\.com/.*"

After upgrading to a patched version, review all auto-migrated GitRepo resources by running the following command:

kubectl get gitrepo -A -o json | \
  jq -r '.items[] | select(.metadata.annotations["fleet.cattle.io/helm-regex-auto-migrated"] == "true") | "\(.metadata.namespace)/\(.metadata.name):…

Missing filtering when the helmRepoURLRegex field isn't set on a GitRepo resource in SUSE Rancher Fleet's bundle reader in 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.15 forwards Helm authentication credentials (BasicAuth) to any URL specified in the helm.repo field of a fleet.yaml file, allowing attackers able to push to fleet monitored git repos to leak helm access credentials.

Missing filtering when the helmRepoURLRegex field isn't set on a GitRepo resource in SUSE Rancher Fleet's bundle reader in 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.15 forwards Helm authentication credentials (BasicAuth) to any URL specified in the helm.repo field of a fleet.yaml file, allowing attackers able to push to fleet monitored git repos to leak helm access credentials.

Impact

A vulnerability has been identified in Fleet when the helmRepoURLRegex field isn't set on a GitRepo resource. Fleet's bundle reader forwards Helm authentication credentials (BasicAuth) to any URL specified in the helm.repo field of a fleet.yaml file.

An attacker with git push access to a Fleet-monitored repository can exploit this behavior by specifying a malicious URL in helm.repo. This causes the Fleet controller to send the configured Helm repository credentials to the attacker’s server.

As a result, the attacker can capture the username and password that an administrator configured to access a private Helm chart repository. However, the response body from the attacker's server isn't included in the error message (this behavior was fixed in Fleet v0.13.3 and later), which prevents additional internal data from leaking through the status condition.

The final severity of this vulnerability depends on the specific permissions of the leaked credentials.

Fleet recommends you to:

1. Review your system for potentially leaked credentials.
2. Replace any credentials that might be compromised.

Please consult the associated MITRE ATT&CK - Technique - Stored Data Manipulation and MITRE ATT&CK - Technique - Steal Application Access Token for further information about this category of attack.

Patches

To resolve this vulnerability, upgrade to a patched version of Fleet. The patched version of Fleet now requires you to set the helmRepoURLRegex field on the GitRepo. If the helmRepoURLRegex is empty or missing, Fleet won’t send credentials, regardless of the URL specified in fleet.yaml.

When you upgrade, a Helm pre-upgrade job automatically migrates existing GitRepo resources that have helmSecretName or helmSecretNameForPaths configured but lack a helmRepoURLRegex. The migration job performs the following actions:

The job extracts the scheme and host from the Helm repository URLs already stored in the resource's Bundles. For example, a GitRepo with Bundles referencing https://charts.example.com/stable receives helmRepoURLRegex: "^https://charts\.example\.com/". This limits credential forwarding to the origins already in use before the upgrade. Migrated resources are annotated with fleet.cattle.io/helm-regex-auto-migrated: "true" so you can easily audit them.

If no Bundles with Helm repository URLs exist during the migration (for example, if the GitRepo has never successfully synced), helmRepoURLRegex remains empty and credentials aren't forwarded. You must set this field manually before Fleet will send credentials.

The migration job runs only once per installation and records its status in a ConfigMap named fleet-helm-url-regex-migrated in the Fleet system namespace. Any GitRepo resources you create after the upgrade require an explicit helmRepoURLRegex to forward credentials.

Patched versions of Fleet include releases v0.15.2, v0.14.6, 0.13.11, and v0.12.15.

Workarounds

If you cannot immediately upgrade to a patched version, use the following methods to mitigate the risk and audit your environment. Set helmRepoURLRegex on all GitRepo resources that use helmSecretName. Ensure the regular expression matches only your legitimate Helm repository URL.

Example configuration:

apiVersion: fleet.cattle.io/v1alpha1
kind: GitRepo
metadata:
  name: my-app
  namespace: fleet-local
spec:
  repo: https://git.example.com/org/my-app.git
  helmSecretName: helm-creds
  helmRepoURLRegex: "^https://charts\\.example\\.com/.*"

After upgrading to a patched version, review all auto-migrated GitRepo resources by running the following command:

kubectl get gitrepo -A -o json | \
  jq -r '.items[] | select(.metadata.annotations["fleet.cattle.io/helm-regex-auto-migrated"] == "true") | "\(.metadata.namespace)/\(.metadata.name):…

Rancher Fleet has SSRF in Bundle Reader via Unvalidated Helm Repository URL in fleet.yaml in github.com/rancher/fleet

This update for govulncheck-vulndb fixes the following issues:

• Update to version 0.0.20260723T184607 2026-07-23T18:46:07Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

• GO-2026-4730 CVE-2026-33022 GHSA-cv4x-93xx-wgfj
• GO-2026-4761 CVE-2026-33211 GHSA-j5q5-j9gm-2w5c
• GO-2026-5102 CVE-2026-45021 GHSA-3vcp-chfh-f6r2
• GO-2026-5272 CVE-2026-40938 GHSA-94jr-7pqp-xhcq
• GO-2026-5486 CVE-2026-40924 GHSA-m2cx-gpqf-qf74
• GO-2026-5542 CVE-2026-40090 GHSA-pj97-4p9w-gx3q
• GO-2026-5630 CVE-2026-25542 GHSA-rmx9-2pp3-xhcr
• GO-2026-5643 CVE-2026-40923 GHSA-rx35-6rhx-7858
• GO-2026-5675 CVE-2026-41492 GHSA-vvf7-6rmr-m29q
• GO-2026-5711 CVE-2026-40161 GHSA-wjxp-xrpv-xpff
• GO-2026-5746 CVE-2026-41567 GHSA-x86f-5xw2-fm2r
• GO-2026-5749 CVE-2026-41328 GHSA-x92x-px7w-4gx4
• GO-2026-5837 CVE-2026-44840 GHSA-q2m9-6jp9-c6mc
• GO-2026-5929 CVE-2026-44342 GHSA-26v7-h57m-gh9m
• GO-2026-5930 CVE-2026-33655 GHSA-6qcr-qxgr-m7fv
• GO-2026-5933 GHSA-3g4q-2f67-2gvh
• GO-2026-5934 GHSA-59qp-cfj3-rp64
• GO-2026-5935 GHSA-7856-g3gv-9wq8
• GO-2026-5936 CVE-2026-53552 GHSA-26rh-24rg-j3vv
• GO-2026-5937 CVE-2026-53508 GHSA-2jcc-mxv7-p3f9
• GO-2026-5938 CVE-2026-53553 GHSA-4g5x-hcwm-82jw
• GO-2026-5939 CVE-2026-10517 GHSA-698x-9w2p-7vvp
• GO-2026-5940 CVE-2026-53572 GHSA-6w3m-4hhp-775q
• GO-2026-5941 CVE-2026-53487 GHSA-gvhc-wv3v-7pf8
• GO-2026-5942 CVE-2026-46600
• GO-2026-5944 CVE-2026-50197 GHSA-659f-rgp5-w4wf
• GO-2026-5945 CVE-2026-6815 GHSA-rmxx-v9rj-vpvg
• GO-2026-5946 CVE-2026-52831 GHSA-v5px-423j-pf7p
• GO-2026-5947 CVE-2026-53649 GHSA-xqhv-chqm-fhcc
• GO-2026-5948 CVE-2026-50554 GHSA-588f-fvcv-xhvf
• GO-2026-5949 CVE-2026-50553 GHSA-rqrh-8wpv-x7hh
• GO-2026-5950 CVE-2026-53602 GHSA-339v-266x-79xr
• GO-2026-5951 CVE-2026-10219 GHSA-6jm8-4fhr-5w64
• GO-2026-5952 CVE-2026-49834 GHSA-9vcr-p3rj-q5q6
• GO-2026-5953 CVE-2026-9094 GHSA-c9w5-qp6m-m395
• GO-2026-5956 CVE-2026-55252 GHSA-h5g6-xmh4-hc37
• GO-2026-5957 CVE-2026-54158 GHSA-5xfx-xj4h-5p7r
• GO-2026-5958 CVE-2026-54068 GHSA-gcm7-57gf-953c
• GO-2026-5959 CVE-2026-54072 GHSA-h29v-hj44-q8cv
• GO-2026-5961 CVE-2026-54069 GHSA-hvr9-72v2-fff3
• GO-2026-5962 CVE-2026-54088 GHSA-m93h-4hw7-5qcm
• GO-2026-5963 CVE-2026-54067 GHSA-mvjr-vv3c-w4qv
• GO-2026-5964 CVE-2026-54066 GHSA-p4m3-mgmm-c664
• GO-2026-5965 CVE-2026-54070 GHSA-w7cg-whh7-xp28
• GO-2026-5966 CVE-2026-54089 GHSA-xqp3-jq6g-x3qm
• GO-2026-5967 CVE-2026-50551 GHSA-56mp-4f3v-fgj2
• GO-2026-5968 CVE-2026-54174 GHSA-fpg8-7664-jc5q
• GO-2026-5969 GHSA-g936-7jqj-mwv8
• GO-2026-5970 CVE-2026-56852
• GO-2026-5973 CVE-2026-54250 GHSA-jxr7-mqhw-9p98
• GO-2026-5974 CVE-2026-44300 GHSA-wmj8-9953-vff5
• GO-2026-5975 CVE-2026-50018 GHSA-42j2-w334-qxw7
• GO-2026-5976 CVE-2026-50141 GHSA-g7mm-9vx7-jm7h
• GO-2026-5977 CVE-2026-50013 GHSA-qrh4-p6v4-mrfg
• GO-2026-5978 CVE-2026-50125 GHSA-qw5r-ppcg-f8rj
• GO-2026-5979 CVE-2026-50006 GHSA-xrcf-6jh3-ggvx
• GO-2026-5980 CVE-2026-50158 GHSA-2c7f-fxww-6w6c
• GO-2026-5981 GHSA-mqxv-9rm6-w8qc
• GO-2026-5982 GHSA-pqg7-v6wh-3pfp
• GO-2026-5984 CVE-2026-53604 GHSA-2p2f-px33-4vv5
• GO-2026-5985 GHSA-7rx3-5wx3-5v76
• GO-2026-5986 CVE-2026-61699 GHSA-cm26-5974-52h8
• GO-2026-5987 CVE-2026-55513 GHSA-g4x6-jcvr-9m3g
• GO-2026-5988 CVE-2026-54628 GHSA-hwrq-8wxh-q4xv
• GO-2026-5989 CVE-2026-55512 GHSA-m3cx-mwpg-32jg
• GO-2026-5990 CVE-2026-54629 GHSA-mf78-3rpf-r784
• GO-2026-5991 CVE-2026-53603 GHSA-q4vm-pq3q-8wgq
• GO-2026-5992 CVE-2026-61549 GHSA-qf34-295c-26v8
• GO-2026-5996 CVE-2026-54450 GHSA-pph6-vfjv-vpjw
• GO-2026-5997 CVE-2026-54452 GHSA-xgch-x3mx-cm3c
• GO-2026-5998 CVE-2026-54495 GHSA-398h-7f66-3h4p
• GO-2026-5999 CVE-2026-10814 GHSA-jh6h-v6mp-h22v
• GO-2026-6002 CVE-2026-58196 GHSA-pr64-jmmf-jp54
• GO-2026-6003 CVE-2026-53714 GHSA-22xc-xg2r-9j7v
• GO-2026-6004 CVE-2026-52833 GHSA-3v79-m2cg-89ww
• GO-2026-6005 CVE-2026-53715 GHSA-8fv2-88gg-hm7q
• GO-2026-6006 CVE-2026-53716 GHSA-cxpq-8v7q-cg56 *…