{"id":"CVE-2026-27695","summary":"zae-limiter: DynamoDB hot partition throttling enables per-entity Denial of Service","details":"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.","aliases":["GHSA-76rv-2r9v-c5m6","PYSEC-2026-3434"],"modified":"2026-08-12T03:51:37.544949147Z","published":"2026-02-25T14:56:27.221Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27695.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-770"]},"references":[{"type":"WEB","url":"https://github.com/zeroae/zae-limiter/releases/tag/v0.10.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27695.json"},{"type":"ADVISORY","url":"https://github.com/zeroae/zae-limiter/security/advisories/GHSA-76rv-2r9v-c5m6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27695"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/zeroae/zae-limiter","events":[{"introduced":"0"},{"fixed":"481ce44d818d66e31d8837bc48519660ce4c267f"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:zeroae:zae-limiter:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"0.10.1"}]}}],"versions":["v0.10.0","v0.9.1","v0.9.0","v0.8.1","v0.8.0","v0.7.0","v0.6.0","v0.5.0","v0.4.1","v0.4.0","v0.3.0","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27695.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"}]}