{"cve":"CVE-2021-36155","nvd":{"published":"2021-07-09T12:15:08.127","modified":"2026-06-17T03:58:25.617","status":"Modified","description":"LengthPrefixedMessageReader in gRPC Swift 1.1.0 and earlier allocates buffers of arbitrary length, which allows remote attackers to cause uncontrolled resource consumption and deny service.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770"],"references":["https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35303","https://github.com/grpc/grpc-swift/releases","https://github.com/grpc/grpc-swift/security/advisories/GHSA-rxmj-hg9v-vp3p","https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35303","https://github.com/grpc/grpc-swift/releases"],"products":["linuxfoundation:grpc_swift"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2021-36155","score":0.02082,"percentile":0.81544,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}