{"id":"CVE-2026-27695","state":"PUBLISHED","title":"zae-limiter: DynamoDB hot partition throttling enables per-entity Denial of Service","description":"zae-limiter is a rate limiting library using the token bucket algorithm. Prior to version 0.10.1, all rate limit buckets for a single entity share the same DynamoDB partition key (`namespace/ENTITY#{id}`). A high-traffic entity can exceed DynamoDB's per-partition throughput limits (~1,000 WCU/sec), causing throttling that degrades service for that entity — and potentially co-located entities in the same partition. Version 0.10.1 fixes the issue.","publishedAt":"2026-02-25T14:56:27.221Z","updatedAt":"2026-02-26T21:33:41.329Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["zeroae zae-limiter"],"affected":[{"vendor":"zeroae","product":"zae-limiter","versions":[{"version":"< 0.10.1","status":"affected"}]}],"references":["https://github.com/zeroae/zae-limiter/security/advisories/GHSA-76rv-2r9v-c5m6","https://github.com/zeroae/zae-limiter/releases/tag/v0.10.1"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/27xxx/CVE-2026-27695.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-27695","state":"PUBLISHED","datePublished":"2026-02-25T14:56:27.221Z","dateUpdated":"2026-02-26T21:33:41.329Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-02-23T17:56:51.202Z"},"containers":{"cna":{"title":"zae-limiter: DynamoDB hot partition throttling enables per-entity Denial of Service","descriptions":[{"lang":"en","value":"zae-limiter is a rate limiting library using the token bucket algorithm. Prior to version 0.10.1, all rate limit buckets for a single entity share the same DynamoDB partition key (`namespace/ENTITY#{id}`). A high-traffic entity can exceed DynamoDB's per-partition throughput limits (~1,000 WCU/sec), causing throttling that degrades service for that entity — and potentially co-located entities in the same partition. Version 0.10.1 fixes the issue."}],"affected":[{"vendor":"zeroae","product":"zae-limiter","versions":[{"version":"< 0.10.1","status":"affected"}]}],"references":[{"url":"https://github.com/zeroae/zae-limiter/security/advisories/GHSA-76rv-2r9v-c5m6","name":"https://github.com/zeroae/zae-limiter/security/advisories/GHSA-76rv-2r9v-c5m6","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/zeroae/zae-limiter/releases/tag/v0.10.1","name":"https://github.com/zeroae/zae-limiter/releases/tag/v0.10.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-02-25T14:56:27.221Z"},"source":{"advisory":"GHSA-76rv-2r9v-c5m6","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-27695","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-02-26T21:07:07.167835Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-26T21:33:41.329Z"}}]}}}