{"id":"CVE-2026-115993","kind":"vulnerability","aliases":["CVE-2026-115993"],"related":[],"title":"Cervantes: stored XSS in Checklists Notes runs code in users' browsers","description":"Stored XSS vulnerability in the “Notes” field of the Checklists in Cervantes version v1.3-beta could allow an attacker to execute arbitrary code in another user's browser with elevated privileges","summary":"The Notes field of Checklists in Cervantes v1.3-beta stores attacker-supplied script that runs when other users view it. An attacker can run code in another user's browser with that user's elevated privileges.","severity":"medium","cvss":6.8,"epss":0.00421,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["cervantes","other","self-hosted"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-10-24T09:16:44+00:00","first_seen_at":"2026-10-24T09:47:21+00:00","triaged_at":"2026-10-25T03:42:33+00:00","updated_at":"2026-10-25T12:38:49+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-10-25T03:42:33Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"unknown","title":"Cervantes: stored XSS in Checklists Notes runs code in users' browsers","impact":"medium","summary":"The Notes field of Checklists in Cervantes v1.3-beta stores attacker-supplied script that runs when other users view it. An attacker can run code in another user's browser with that user's elevated privileges.","category":"other","nicknames":[],"who_cares":["cervantes","self-hosted"],"confidence":0.6,"needs_auth":"unknown","worst_case":"Script runs in other users' browsers with their elevated privileges","analyst_note":"Check the NVD entry and the Cervantes project for a fixed version, whether Checklists must be enabled, and whether the Notes field is viewable by low-privilege users.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000505,"input_tokens":3292,"output_tokens":351,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-115993':14A,17A '-2026':13A,16A 'allow':74C 'anoth':49B,82C 'arbitrari':79C 'attack':33B,44B,76C 'attacker-suppli':32B 'browser':11A,52B,85C 'cervant':1A,18B,29B,70C 'checklist':5A,27B,68C 'code':8A,47B,80C 'could':73C 'cve':12A,15A 'elev':57B,87C 'execut':78C 'field':25B,65C 'host':22B 'note':6A,24B,64C 'privileg':58B,88C 'run':7A,37B,46B 'script':35B 'self':21B 'self-host':20B 'store':2A,31B,59C 'suppli':34B 'user':10A,40B,50B,55B,83C 'v1.3-beta':30B,72C 'version':71C 'view':41B 'vulner':61C 'xss':3A,60C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-24T09:16:44+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N","cvss_by":"772f0079-75c2-41ca-913e-d9072716578b","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-115993","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115993","severity":null,"published_at":"2026-10-24T09:16:44+00:00","modified_at":"2026-10-24T09:16:44+00:00","first_seen_at":"2026-10-24T09:47:21+00:00","fetched_at":"2026-10-24T09:47:21+00:00","note":null},{"source":"epss","external_id":"CVE-2026-115993","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-115993","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-25T12:38:49+00:00","fetched_at":"2026-10-25T12:38:49+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"}