Search vulnerabilities

Use the Query Builder to create your own search query, or check out the documentation to learn the search syntax.

Results 13

Export CSV
CVE-2026-59818

etcd: gRPC client listener does not enforce `--client-crl-file` certificate revocation

etcd is a distributed key-value store for the data of a distributed system. Prior to 3.5.32 and 3.6.13, when etcd is configured with --listen-client-http-urls to split HTTP and gRPC client endpoints onto separate listeners, the --client-crl-file Certificate Revocation List is not enforced on the gRPC listener, allowing a client with a revoked certificate to authenticate successfully over gRPC. This issue is fixed in versions 3.5.32 and 3.6.13.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Etcd
Products
Etcd
CVE-2026-73499

etcd: Watch API authorization bypass via open-ended range requests

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.5.33, 3.6.14, and 3.7.1, a user granted READ permission on a single exact key can use the Watch gRPC API with clientv3.WithFromKey() to receive watch events for every key lexicographically greater than or equal to the permitted key. In server/etcdserver/api/v3rpc/watch.go, the open-ended RangeEnd sentinel is rewritten before the RBAC permission check in server/auth/range_perm_cache.go function isRangeOpPermitted, causing the request to be treated as an exact-key watch. Range/Get and DeleteRange requests are not affected, and the issue affects only clusters with authentication enabled. This issue is fixed in versions 3.5.33, 3.6.14, and 3.7.1.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Etcd
Products
Etcd
CVE-2026-73500

etcd: `tlsListener.acceptLoop` spawns unbounded handshake goroutines with no deadline

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.5.33, 3.6.14, and 3.7.1, a network attacker who can reach an etcd TLS listener can open many TCP connections and never send a ClientHello. In client/pkg/transport/listener_tls.go, each connection handled by tlsListener.acceptLoop spawns a goroutine that blocks indefinitely inside tls.Conn.Handshake() and remains tracked in the pending map. Unbounded goroutine and map growth can exhaust memory in the etcd process, causing loss of availability for the cluster and, when etcd backs Kubernetes, the control plane. This issue is fixed in versions 3.5.33, 3.6.14, and 3.7.1.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Etcd
Products
Etcd
CVE-2026-44283

etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks

etcd is a distributed key-value store for the data of a distributed system. Prior to 3.4.44, 3.5.30, and 3.6.11, a vulnerability in etcd allows read access via PrevKv, or lease attachment in Put requests within transaction operations, to bypass RBAC authorization checks. An authenticated user without sufficient read or lease-related permissions may be able to access unauthorized data or attach leases by invoking transaction operations with these features enabled. This vulnerability is fixed in 3.4.44, 3.5.30, and 3.6.11.

CVSS 3.1 · 0 Low EPSS < 1% KEV · Not listed
Vendors
Etcd
Products
Etcd
CVE-2026-33343

etcd: Nested etcd transactions bypass RBAC authorization checks

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.4.42, 3.5.28, and 3.6.9, an authenticated user with RBAC restricted permissions on key ranges can use nested transactions to bypass all key-level authorization. This allows any authenticated user with direct access to etcd to effectively ignore all key range restrictions, accessing the entire etcd data store. Kubernetes does not rely on etcd’s built-in authentication and authorization. Instead, the API server handles authentication and authorization itself, so typical Kubernetes deployments are not affected. Versions 3.4.42, 3.5.28, and 3.6.9 contain a patch. If upgrading is not immediately possible, reduce exposure by treating the affected RPCs as unauthenticated in practice. Restrict network access to etcd server ports so only trusted components can connect and require strong client identity at the transport layer, such as mTLS with tightly scoped client certificate distribution.

CVSS 3.1 · 0 Low EPSS < 1% KEV · Not listed
Vendors
Etcd
Products
Etcd
CVE-2026-33413

etcd: Authorization bypasses in multiple APIs

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.4.42, 3.5.28, and 3.6.9, unauthorized users may bypass authentication or authorization checks and call certain etcd functions in clusters that expose the gRPC API to untrusted or partially trusted clients. In unpatched etcd clusters with etcd auth enabled, unauthorized users are able to call MemberList and learn cluster topology, including member IDs and advertised endpoints; call Alarm, which can be abused for operational disruption or denial of service; use Lease APIs, interfering with TTL-based keys and lease ownership; and/or trigger compaction, permanently removing historical revisions and disrupting watch, audit, and recovery workflows. Kubernetes does not rely on etcd’s built-in authentication and authorization. Instead, the API server handles authentication and authorization itself, so typical Kubernetes deployments are not affected. Versions 3.4.42, 3.5.28, and 3.6.9 contain a patch. If upgrading is not immediately possible, reduce exposure by treating the affected RPCs as unauthenticated in practice. Restrict network access to etcd server ports so only trusted components can connect and/or require strong client identity at the transport layer, such as mTLS with tightly scoped client certificate distribution.

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Etcd
Products
Etcd
CVE-2021-28235

etcd: Information discosure via debug function

Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to escalate privileges via the debug function.

CVSS 3.1 · 9.8 Critical EPSS 1.6% KEV · Not listed
Vendors
Etcd Redhat
Products
Etcd Openstack
CVE-2023-32082

etcd key name can be accessed via LeaseTimeToLive API

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.4.26 and 3.5.9, the LeaseTimeToLive API allows access to key names (not value) associated to a lease when `Keys` parameter is true, even a user doesn't have read permission to the keys. The impact is limited to a cluster which enables auth (RBAC). Versions 3.4.26 and 3.5.9 fix this issue. There are no known workarounds.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
Vendors
Etcd Redhat
Products
Etcd Openstack
CVE-2022-34038

etcd: remote DoS via PageWriter.write

Etcd v3.5.4 allows remote attackers to cause a denial of service via function PageWriter.write in pagewriter.go. NOTE: the vendor's position is that this is not a vulnerability.

CVSS 3.1 · 7.5 High EPSS 1.8% KEV · Not listed
Vendors
Etcd
Products
Etcd
CVE-2020-15113

Improper Preservation of Permissions in etcd

In etcd before versions 3.3.23 and 3.4.10, certain directory paths are created (etcd data directory and the directory path when provided to automatically generate self-signed certificates for TLS connections with clients) with restricted access permissions (700) by using the os.MkdirAll. This function does not perform any permission checks when a given directory path exists already. A possible workaround is to ensure the directories have the desired permission (700).

CVSS 3.1 · 5.7 Medium EPSS < 1% KEV · Not listed
Vendors
Etcd Fedoraproject Redhat
Products
Etcd Fedora Openshift and 1 more
CVE-2020-15112

Improper Input Validation in etcd

In etcd before versions 3.3.23 and 3.4.10, it is possible to have an entry index greater then the number of entries in the ReadAll method in wal/wal.go. This could cause issues when WAL entries are being read during consensus as an arbitrary etcd consensus participant could go down from a runtime panic when reading the entry.

CVSS 3.1 · 6.5 Medium EPSS 1.3% KEV · Not listed
Vendors
Etcd Fedoraproject Redhat
Products
Etcd Fedora Openshift and 2 more
CVE-2020-15106

Improper Input Validation in etcd

In etcd before versions 3.3.23 and 3.4.10, a large slice causes panic in decodeRecord method. The size of a record is stored in the length field of a WAL file and no additional validation is done on this data. Therefore, it is possible to forge an extremely large frame size that can unintentionally panic at the expense of any RAFT participant trying to decode the WAL.

CVSS 3.1 · 6.5 Medium EPSS 1.3% KEV · Not listed
Vendors
Etcd Fedoraproject Redhat
Products
Etcd Fedora Openshift and 2 more
CVE-2018-16886

etcd: Improper Authentication in auth/store.go:AuthInfoFromTLS() via gRPC-gateway

etcd versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11 are vulnerable to an improper authentication issue when role-based access control (RBAC) is used and client-cert-auth is enabled. If an etcd client server TLS certificate contains a Common Name (CN) which matches a valid RBAC username, a remote attacker may authenticate as that user with any valid (trusted) client certificate in a REST API request to the gRPC-gateway.

CVSS 3.1 · 8.1 High EPSS 4.1% KEV · Not listed
Vendors
Etcd Fedoraproject Redhat
Products
Etcd Fedora Enterprise Linux Desktop and 3 more