🔐 CVE Alert

CVE-2026-73499

UNKNOWN 0.0

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

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-863
Vendor etcd-io
Product etcd
Published Aug 12, 2026
Stay Ahead of the Next One

Get instant alerts for etcd-io etcd

Be the first to know when new unknown vulnerabilities affecting etcd-io etcd are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

Affected Versions

etcd-io / etcd
< 3.5.33 >= 3.6.0, < 3.6.14 >= 3.7.0-alpha.0, < 3.7.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗
github.com: https://github.com/etcd-io/etcd/security/advisories/GHSA-xg4h-6gfc-h4m8 github.com: https://github.com/etcd-io/etcd/commit/6643f80602461a6095c9b294b6512fd9719bef41 github.com: https://github.com/etcd-io/etcd/commit/7cf71ec9e2ec54230a5454392fa4ffd4574b41ed github.com: https://github.com/etcd-io/etcd/commit/afeaa624da19085b47fb5ccc7c22a8c421bc2eae github.com: https://github.com/etcd-io/etcd/commit/e863b001bbf3367003a543aa3099db9892134cd7 github.com: https://github.com/etcd-io/etcd/releases/tag/v3.5.33 github.com: https://github.com/etcd-io/etcd/releases/tag/v3.6.14 github.com: https://github.com/etcd-io/etcd/releases/tag/v3.7.1