{"cve":"CVE-2026-82439","nvd":{"published":"2026-09-14T14:17:12.470","modified":"2026-09-14T20:58:48.430","status":"Deferred","description":"Description\n\nThe DRPC server kept a map from function name to request queue and created an entry the first time a\nfunction name was seen. No code path ever removed an entry: request cleanup removed the request from its\nqueue, and the shutdown path drained queues, but the queue object and its map entry remained for the life of\nthe process.\n\nFunction names come from the client and are not constrained to functions any topology has registered, so the\nnumber of retained entries is bounded only by the number of distinct names an attacker chooses to send, and\neach retained entry holds the name itself. `drpc.authorizer` is unset by default, so no credentials are\nrequired to reach the endpoint.\n\nThe retained state is permanent rather than a transient load spike, so the effect accumulates until the DRPC\nserver exhausts its heap.\n\nMitigation\n\nUpgrade to 3.1.0, where a function's queue is removed once nothing is waiting in it.\n\nUsers who cannot upgrade immediately should configure `drpc.authorizer` so that only trusted principals can\nreach the DRPC endpoints, and should ensure the DRPC ports are not reachable from untrusted networks.\n\nCredit\n\nThe ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-770"],"references":["https://lists.apache.org/thread/7sgzvv5lzz93jn6vy74qfk105bhmkrzs","http://www.openwall.com/lists/oss-security/2026/09/13/18"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-82439","score":0.00338,"percentile":0.27226,"date":"2026-11-01"},"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."]}