{"id":"CVE-2026-111883","kind":"vulnerability","aliases":["CVE-2026-111883"],"related":[],"title":"Locust: cross-site request forgery lets attackers stop load tests","description":"Locust through 2.46.7 contains a cross-site request forgery vulnerability that allows remote attackers to stop load tests or reset statistics via GET requests to /stop and /stats/reset. Attackers can lure an operator to a malicious page triggering cross-site GET requests, terminating running swarms and wiping recorded performance results.","summary":"Locust through 2.46.7 accepts GET requests to /stop and /stats/reset without checking the request origin. A malicious web page visited by an operator can stop running load tests and wipe recorded performance statistics.","severity":"medium","cvss":5.4,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["load-testing","locust","package","python"],"not_affected_if":["headless-runs","newer-version"],"how_to_check":"- Run `pip show locust` and compare the version with `2.46.7`\n- Check whether the Locust web UI is reachable from a browser the team uses","fix":"- Upgrade Locust past `2.46.7` (fixed version unknown from the sources)\n- Restrict access to the Locust web UI to trusted networks until upgraded","status":"open","published_at":"2026-10-19T14:17:00+00:00","first_seen_at":"2026-10-23T21:57:18+00:00","triaged_at":"2026-10-25T04:16:51+00:00","updated_at":"2026-10-25T04:16:51+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-25T04:16:51Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade Locust past `2.46.7` (fixed version unknown from the sources)\n- Restrict access to the Locust web UI to trusted networks until upgraded","reach":"network","title":"Locust: cross-site request forgery lets attackers stop load tests","impact":"low","summary":"Locust through 2.46.7 accepts GET requests to /stop and /stats/reset without checking the request origin. A malicious web page visited by an operator can stop running load tests and wipe recorded performance statistics.","category":"package","nicknames":[],"who_cares":["locust","python","load-testing"],"confidence":0.6,"needs_auth":"no","worst_case":"running load tests stopped and statistics erased by a web page","analyst_note":"","how_to_check":"- Run `pip show locust` and compare the version with `2.46.7`\n- Check whether the Locust web UI is reachable from a browser the team uses","needs_analyst":false,"not_affected_if":["headless-runs","newer-version"],"who_is_affected":"Teams running the Locust web UI (the browser-facing dashboard) on a version through 2.46.7, where an operator with a browser session can be lured to a malicious page. Headless runs without the web UI are not exposed through this path. Teams on newer releases can skip it.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000572,"input_tokens":3330,"output_tokens":478,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-111883':14A,17A '-2026':13A,16A '/stats/reset':33B,85C '/stop':31B,83C '2.46.7':26B,59C 'accept':27B 'allow':69C 'attack':8A,71C,86C 'check':35B 'contain':60C 'cross':3A,63C,97C 'cross-sit':2A,62C,96C 'cve':12A,15A 'forgeri':6A,66C 'get':28B,80C,99C 'let':7A 'load':10A,19B,50B,74C 'load-test':18B 'locust':1A,21B,24B,57C 'lure':88C 'malici':40B,93C 'oper':46B,90C 'origin':38B 'packag':22B 'page':42B,94C 'perform':55B,107C 'python':23B 'record':54B,106C 'remot':70C 'request':5A,29B,37B,65C,81C,100C 'reset':77C 'result':108C 'run':49B,102C 'site':4A,64C,98C 'statist':56B,78C 'stop':9A,48B,73C 'swarm':103C 'termin':101C 'test':11A,20B,51B,75C 'trigger':95C 'via':79C 'visit':43B 'vulner':67C 'web':41B 'wipe':53B,105C 'without':34B","nicknames":[],"mitigations":[],"who_affected":"Teams running the Locust web UI (the browser-facing dashboard) on a version through 2.46.7, where an operator with a browser session can be lured to a malicious page. Headless runs without the web UI are not exposed through this path. Teams on newer releases can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-19T14:17:00+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-111883","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111883","severity":null,"published_at":"2026-10-19T14:17:00+00:00","modified_at":"2026-10-22T03:16:32+00:00","first_seen_at":"2026-10-23T21:57:18+00:00","fetched_at":"2026-10-23T22:28:57+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}