{"id":"CVE-2026-108525","revision":null,"records":[{"revision":"4e392438fe6940d29a79131ef7088daf","observedAt":"2026-10-26T16:35:30.797+00:00","statement":{"source":"cve-program","id":"CVE-2026-108525","aliases":[],"title":"HTTP/2 inbound flow control is not enforced, letting a client queue unbounded DATA in stream processes in Bandit","description":"Allocation of Resources Without Limits or Throttling vulnerability in the HTTP/2 implementation of mtrudel bandit allows an unauthenticated remote attacker to exhaust server memory via DATA frames sent past the advertised receive window. The attacker requests a response larger than the 65,535-byte initial window and withholds WINDOW_UPDATE, so the stream process blocks while sending and stops reading, then floods small DATA frames on that stream. Every frame is queued in the stream's mailbox until the BEAM node runs out of memory.\n\nBandit.HTTP2.Connection.handle_frame/3 in lib/bandit/http2/connection.ex forwards each DATA frame to the stream process without consulting the receive window, and Bandit.HTTP2.FlowControl.compute_recv_window/2 replenishes the window as data arrives rather than as it is consumed, and never answers a violation with FLOW_CONTROL_ERROR.\n\nThis issue affects bandit: from 0.3.1 before 1.14.0.","state":0,"publishedAt":"2026-10-26T13:29:42.52+00:00","modifiedAt":"2026-10-26T15:35:52.227+00:00","affected":[{"ecosystem":"https://repo.hex.pm","name":"bandit","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"collectionURL\": \"https://repo.hex.pm\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:mtrudel:bandit:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageName\": \"bandit\",\n                    \"packageURL\": \"pkg:hex/bandit\",\n                    \"product\": \"bandit\",\n                    \"repo\": \"https://github.com/mtrudel/bandit\",\n                    \"vendor\": \"mtrudel\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"1.14.0\",\n                            \"status\": \"affected\",\n                            \"version\": \"0.3.1\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"https://github.com","name":"mtrudel/bandit","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"collectionURL\": \"https://github.com\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:mtrudel:bandit:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageName\": \"mtrudel/bandit\",\n                    \"packageURL\": \"pkg:github/mtrudel/bandit\",\n                    \"product\": \"bandit\",\n                    \"repo\": \"https://github.com/mtrudel/bandit\",\n                    \"vendor\": \"mtrudel\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"220b9dfd27f9a21305be2afc75cbe585ddc24e7a\",\n                            \"status\": \"affected\",\n                            \"version\": \"c8dc1e97050cf359f61ed6cdd110f3cdaf1d6f5f\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"}],"references":["https://github.com/mtrudel/bandit/security/advisories/GHSA-c3g7-2pg5-qvwh","https://cna.erlef.org/cves/CVE-2026-108525.html","https://osv.dev/vulnerability/EEF-CVE-2026-108525","https://github.com/mtrudel/bandit/commit/c8dc1e97050cf359f61ed6cdd110f3cdaf1d6f5f","https://github.com/mtrudel/bandit/commit/220b9dfd27f9a21305be2afc75cbe585ddc24e7a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-108525","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-108525","identifiers":["CVE-2026-108525"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-10-27T23:49:11.7604642+00:00","complete":true,"records":1760,"lastAttemptAt":"2026-10-27T23:49:11.7604642+00:00","lastSuccessAt":"2026-10-27T23:49:11.9251984+00:00","error":null,"lastVerifiedAt":"2026-10-27T23:49:11.9252004+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-187d2b72c94ceb8c4417f1032ec3109a3a3a7b730abadb561d8cdd2a96e04d27-6f8284a2c5d6f7a90df031c58649fd65623df7f48801e0993675b394053cb25f","complete":true,"records":415414,"lastAttemptAt":"2026-10-27T23:46:16.5712996+00:00","lastSuccessAt":"2026-10-27T23:46:16.4250984+00:00","error":null,"lastVerifiedAt":"2026-10-27T23:46:16.5712996+00:00","snapshotPublishedAt":"2026-10-27T23:26:27+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-2e31ad7d92d64caab0469a906a9524b8","complete":false,"records":7721,"lastAttemptAt":"2026-10-28T00:01:24.1583332+00:00","lastSuccessAt":"2026-10-28T00:01:24.154+00:00","error":"7 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-10-28T00:01:24.154+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":2993,"expectedIdentifiers":13514,"failedIdentifiers":7},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-10-27T23:49:11.7604642+00:00","complete":true,"records":1093,"lastAttemptAt":"2026-10-27T23:49:11.7604642+00:00","lastSuccessAt":"2026-10-27T23:49:11.9264383+00:00","error":null,"lastVerifiedAt":"2026-10-27T23:49:11.9264386+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-8d16a738328646698f9217d8ea11893c","complete":true,"records":13449,"lastAttemptAt":"2026-10-27T23:49:12.4732058+00:00","lastSuccessAt":"2026-10-27T22:48:29.491+00:00","error":null,"lastVerifiedAt":"2026-10-27T22:48:29.491+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13514,"expectedIdentifiers":13514,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-f7cb12508d9e6a348c8a60f772ed85529cc80cd2ff853da1099b57754b20e943","complete":true,"records":9790,"lastAttemptAt":"2026-10-27T23:49:11.6141417+00:00","lastSuccessAt":"2026-10-27T21:49:03.9756799+00:00","error":null,"lastVerifiedAt":"2026-10-27T23:49:11.6141417+00:00","snapshotPublishedAt":"2026-10-27T21:48:11+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-72e5e79de0026dd0562d40734074a2236a06886643d67182b8381eaee757dbf7","complete":true,"records":1966,"lastAttemptAt":"2026-10-27T23:46:16.7294886+00:00","lastSuccessAt":"2026-10-27T21:46:38.0277323+00:00","error":null,"lastVerifiedAt":"2026-10-27T23:46:16.7294886+00:00","snapshotPublishedAt":"2026-10-27T21:18:15+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-3a5b306d60fc44677a03a8afc99d87e6c5402770ef68d560f94a8c3ad3802b75","complete":true,"records":3001,"lastAttemptAt":"2026-10-27T23:49:11.7203646+00:00","lastSuccessAt":"2026-10-27T16:45:49.0050993+00:00","error":null,"lastVerifiedAt":"2026-10-27T23:49:11.7203646+00:00","snapshotPublishedAt":"2026-10-27T16:33:43+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-e94506f133c8bd17d5821d183faeaf30a6e2cec4fbbffe29e073cb827f4fb210","complete":true,"records":230853,"lastAttemptAt":"2026-10-27T23:49:11.4810073+00:00","lastSuccessAt":"2026-10-27T23:49:10.0217006+00:00","error":null,"lastVerifiedAt":"2026-10-27T23:49:11.4810073+00:00","snapshotPublishedAt":"2026-10-27T23:33:11+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}