7.1

CVE-2026-73499: etcd-io etcd Incorrect Authorization

CVSS: 7.1v4.0HighAwaiting analysis
AliasesUBUNTU-CVE-2026-73499DEBIAN-CVE-2026-73499CGA-27pj-52f5-h2f9
Published 12-08-2026Last modified 14-08-2026
Open JSON

Vulnerability summary

CVE-2026-73499 is a high (CVSS 7.1) Incorrect Authorization vulnerability in etcd-io etcd. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.7% of scored vulnerabilities.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v4.0 (CVE.org)
EPSS score
0.66%
0%100%
Low · +0.30 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 3
OPENSUSE-SU-2026:21761-1SUSE-SU-2026:23625-1CGA-XJ7J-37C9-523X

Timeline

  1. 12-08-2026
    PublishedVulnerability first disclosed.
  2. 14-08-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.66%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

+0.30 pp

From 0.36% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.66%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard46 products
  • dapr-scheduler-1.14< 1.14.5-r32
  • dapr-scheduler-1.15< 1.15.14-r13
  • dapr-scheduler-1.16< 1.16.19-r1
  • dapr-scheduler-1.17< 1.17.13-r1
  • dapr-scheduler-1.18< 1.18.3-r1
Wolfi12 products
  • dapr-scheduler-1.16< 1.16.19-r1
  • dapr-scheduler-1.17< 1.17.13-r1
  • dockerd-28All versions (No fix recorded)
  • kine< 0.16.4-r1
  • py3-etcdAll versions (No fix recorded)
Debian1 product
  • etcdAll versions (No fix recorded)
Etcd-io1 product
  • etcd< 3.5.33 | ≥ 3.6.0, < 3.6.14 | ≥ 3.7.0-alpha.0, < 3.7.1
Go.etcd.io/etcd1 product
  • v3≥ 3.7.0-alpha.0, < 3.7.1 | ≥ 3.6.0, < 3.6.14 | < 3.5.33
Go.etcd.io/etcd/server1 product
  • v3≥ 3.7.0-alpha.0, < 3.7.1
Ubuntu1 product
  • etcdAll versions (No fix recorded)

7 vendors · 63 products

References

14 links
Show all 14 references