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CVE-2026-25518

20
FAUCET Score

CVE-2026-25518 is a medium-severity denial-of

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.18.0, < 1.18.5CPE matchmatch criteria
cpe:2.3:a:cert-manager:cert-manager:*:*:*:*:*:*:*:*
>= 1.19.0, < 1.19.3CPE matchmatch criteria
cpe:2.3:a:cert-manager:cert-manager:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 3rd percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (54)

gopatch availablevia ghsa
Product: github.com/cert-manager/cert-managerFixed in: 1.18.5
gopatch availablevia ghsa
Product: github.com/cert-manager/cert-managerFixed in: 1.19.3
redhatvendor investigatingvia redhat_api
Product: cert-manager Operator for Red Hat OpenShiftFixed in: cert-manager/cert-manager-operator-bundle
redhatvendor investigatingvia redhat_api
Product: cert-manager Operator for Red Hat OpenShiftFixed in: cert-manager/cert-manager-operator-rhel9
redhatvendor investigatingvia redhat_api
Product: cert-manager Operator for Red Hat OpenShiftFixed in: cert-manager/jetstack-cert-manager-acmesolver-rhel9
redhatvendor investigatingvia redhat_api
Product: cert-manager Operator for Red Hat OpenShiftFixed in: cert-manager/jetstack-cert-manager-rhel9
redhatvendor investigatingvia redhat_api
Product: Cryostat 4Fixed in: cryostat/cryostat-rhel9-operator
redhatvendor investigatingvia redhat_api
Product: External Secrets Operator for Red Hat OpenShiftFixed in: external-secrets-operator/bitwarden-sdk-server-rhel9
redhatvendor investigatingvia redhat_api
Product: External Secrets Operator for Red Hat OpenShiftFixed in: external-secrets-operator/external-secrets-operator-bundle
redhatvendor investigatingvia redhat_api
Product: External Secrets Operator for Red Hat OpenShiftFixed in: external-secrets-operator/external-secrets-operator-rhel9
redhatvendor investigatingvia redhat_api
Product: External Secrets Operator for Red Hat OpenShiftFixed in: external-secrets-operator/external-secrets-rhel9
redhatvendor investigatingvia redhat_api
Product: Multicluster Engine for KubernetesFixed in: multicluster-engine/assisted-service-8-rhel8
redhatvendor investigatingvia redhat_api
Product: Multicluster Engine for KubernetesFixed in: multicluster-engine/assisted-service-9-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift PipelinesFixed in: openshift-pipelines-client
redhatvendor investigatingvia redhat_api
Product: OpenShift PipelinesFixed in: openshift-pipelines/pipelines-pipelines-as-code-controller-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-eventing-apiserver-receive-adapter-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-eventing-channel-controller-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-eventing-channel-dispatcher-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-eventing-controller-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-eventing-filter-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-eventing-ingress-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-eventing-jobsink-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-eventing-mtchannel-broker-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-eventing-mtping-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-eventing-webhook-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-plugin-event-sender-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-serving-controller-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-serving-webhook-rhel9
redhatvendor investigatingvia redhat_api
Product: Power monitoring for Red Hat OpenShiftFixed in: openshift-power-monitoring/kepler-rhel9
redhatvendor investigatingvia redhat_api
Product: Power monitoring for Red Hat OpenShiftFixed in: openshift-power-monitoring/power-monitoring-operator-bundle
redhatvendor investigatingvia redhat_api
Product: Power monitoring for Red Hat OpenShiftFixed in: openshift-power-monitoring/power-monitoring-rhel9-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat Build of KueueFixed in: kueue/kueue-must-gather-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Build of KueueFixed in: kueue/kueue-operator-bundle
redhatvendor investigatingvia redhat_api
Product: Red Hat Build of KueueFixed in: kueue/kueue-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Build of KueueFixed in: kueue/kueue-rhel9-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat Connectivity Link 1Fixed in: rhcl-1/rhcl-operator-bundle
redhatvendor investigatingvia redhat_api
Product: Red Hat Connectivity Link 1Fixed in: rhcl-1/rhcl-rhel9-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-kuberay-operator-controller-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-kueue-controller-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-model-controller-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-model-registry-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-agent-installer-api-server-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-olm-catalogd-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-olm-operator-controller-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/opentelemetry-rhel8-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/opentelemetry-target-allocator-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift GitOpsFixed in: openshift-gitops-1/gitops-rhel8-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenStack Platform 18.0Fixed in: rhoso-operators/openstack-rhel9-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenStack Platform 18.0Fixed in: rhoso-operators/rabbitmq-cluster-rhel9-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenStack Platform 18.0Fixed in: rhoso-operators/telemetry-rhel9-operator
redhatvendor investigatingvia redhat_api
Product: Security Profiles OperatorFixed in: compliance/openshift-security-profiles-operator-bundle
redhatvendor investigatingvia redhat_api
Product: Security Profiles OperatorFixed in: compliance/openshift-security-profiles-rhel8-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenStack Platform 18.0Fixed in: rhoso-operators/openstack-operator-bundle
redhatvendor investigatingvia redhat_api
Product: cert-manager Operator for Red Hat OpenShiftFixed in: cert-manager/cert-manager-istio-csr-rhel9

Vendor Advisories (2)

redhatCVE-2026-25518Moderate

github.com/cert-manager/cert-manager: cert-manager: Denial of Service via crafted DNS entry

Feb 4, 2026
goGHSA-gx3x-vq4p-mhhvmedium

cert-manager-controller DoS via Specially Crafted DNS Response

Feb 2, 2026

References

github.com / cert-manager/cert-manager/commit/409fc24e539711a07aae45ed45abbe03dfdad2cc
Patch
github.com / cert-manager/cert-manager/commit/9a73a0b3853035827edd37ac463e4803ba10327d
Patch
github.com / cert-manager/cert-manager/commit/d4faed26ae12115cceb807cdc12507ebc28980e2
Patch
github.com / cert-manager/cert-manager/pull/8467
Issue TrackingPatch
github.com / cert-manager/cert-manager/pull/8468
Issue TrackingPatch
github.com / cert-manager/cert-manager/pull/8469
Issue TrackingPatch
github.com / cert-manager/cert-manager/security/advisories/GHSA-gx3x-vq4p-mhhv
MitigationPatchVendor Advisory