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CVE-2026-33413

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
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f55aa94dc0fa3ffe7e19d63c2e4ac8c34163c0707686a5f979104fc143e4f415
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"etcd","vendor":"etcd-io","versions":[{"status":"affected","version":">= 3.6.0-alpha.0, < 3.6.9"},{"status":"affected","version":">= 3.5.0-alpha.0, < 3.5.28"},{"status":"affected","version":"< 3.4.42"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fe56320ec44aa106ffdc4447c623a0b5f27b34527b3cd5167aafea9588cea7a0 · sha256:d75fda19a1a23998… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.8,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:fe56320ec44aa106ffdc4447c623a0b5f27b34527b3cd5167aafea9588cea7a0 · sha256:d75fda19a1a23998… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:fe56320ec44aa106ffdc4447c623a0b5f27b34527b3cd5167aafea9588cea7a0 · sha256:d75fda19a1a23998… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/etcd-io/etcd/security/advisories/GHSA-q8m4-xhhv-38mg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/etcd-io/etcd/security/advisories/GHSA-q8m4-xhhv-38mg"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fe56320ec44aa106ffdc4447c623a0b5f27b34527b3cd5167aafea9588cea7a0 · sha256:d75fda19a1a23998… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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