{"id":"CVE-2026-55147","kind":"vulnerability","aliases":["CVE-2026-55147"],"related":[],"title":"LORIS: imaging browser API skips edit permission checks, letting users alter data","description":"LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. In versions from 22.0.0 prior to 27.0.4 and from 28.0.0 prior to 28.0.2, the `API` for the `imaging_browser` module permits edits to imaging data without checking the frontend permissions that restrict editing in Imaging Browser. An authenticated `API` caller can therefore modify imaging data without the required edit authorization. Deployments that no longer use the `API` can disable it to remove access to this endpoint. This issue is fixed in versions 27.0.4 and 28.0.2.","summary":"LORIS, a self-hosted neuroimaging research web application, has an API for the imaging_browser module that accepts edits to imaging data without enforcing the frontend edit permissions. An authenticated API caller can modify imaging data they are not authorized to edit.","severity":"medium","cvss":6.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["loris","neuroimaging","package","research-data","self-hosted"],"not_affected_if":["api-disabled","version-outside-affected-ranges"],"how_to_check":"- Check the installed LORIS version and see whether it is in `22.0.0` to before `27.0.4`, or `28.0.0` to before `28.0.2`.\n- Check whether the API is in use for the imaging_browser module (unknown whether the sources give a specific setting or path to inspect).","fix":"- LORIS `27.0.4` for the 27.x line\n- LORIS `28.0.2` for the 28.x line\n- Sources also say the API can be disabled if no longer used.","status":"open","published_at":"2026-10-30T22:16:54+00:00","first_seen_at":"2026-10-30T22:25:56+00:00","triaged_at":"2026-10-30T22:27:19+00:00","updated_at":"2026-10-30T22:27:19+00:00","category":"package","confidence":0.8,"triage":{"at":"2026-10-30T22:27:19Z","model":"claude-haiku-5-5","output":{"fix":"- LORIS `27.0.4` for the 27.x line\n- LORIS `28.0.2` for the 28.x line\n- Sources also say the API can be disabled if no longer used.","reach":"network","title":"LORIS: imaging browser API skips edit permission checks, letting users alter data","impact":"medium","summary":"LORIS, a self-hosted neuroimaging research web application, has an API for the imaging_browser module that accepts edits to imaging data without enforcing the frontend edit permissions. An authenticated API caller can modify imaging data they are not authorized to edit.","audience":"businesses","category":"package","nicknames":[],"who_cares":["loris","neuroimaging","self-hosted","research-data"],"confidence":0.8,"fix_status":"available","needs_auth":"yes","worst_case":"authenticated user modifies imaging data without edit authorization","analyst_note":"","how_to_check":"- Check the installed LORIS version and see whether it is in `22.0.0` to before `27.0.4`, or `28.0.0` to before `28.0.2`.\n- Check whether the API is in use for the imaging_browser module (unknown whether the sources give a specific setting or path to inspect).","plain_action":"","needs_analyst":false,"not_affected_if":["version-outside-affected-ranges","api-disabled"],"who_is_affected":"Deployments of the LORIS neuroimaging research web application in the affected version ranges are exposed, where the API for the imaging_browser module is reachable by an authenticated user. Teams that no longer use the API can disable it to remove access to this endpoint, per the sources.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.00072,"input_tokens":4246,"output_tokens":590,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-55147':15A,18A '22.0.0':98C '27.0.4':101C,167C '28.0.0':104C '28.0.2':107C,169C 'accept':46B 'access':157C 'alter':11A 'api':4A,39B,59B,109C,133C,151C 'applic':36B,84C 'authent':58B,132C 'author':68B,144C 'browser':3A,43B,113C,130C 'caller':60B,134C 'check':8A,121C 'cve':13A,16A 'data':12A,24B,50B,64B,87C,119C,139C 'deploy':145C 'disabl':153C 'edit':6A,47B,55B,70B,116C,127C,143C 'endpoint':160C 'enforc':52B 'fix':164C 'frontend':54B,123C 'host':27B,32B,82C 'imag':2A,42B,49B,63B,76C,112C,118C,129C,138C 'issu':162C 'let':9A 'longer':148C 'longitudin':72C 'lori':1A,19B,28B,71C 'manag':91C 'modifi':62B,137C 'modul':44B,114C 'neuroimag':20B,33B,93C 'onlin':73C 'packag':21B 'permiss':7A,56B,124C 'permit':115C 'prior':99C,105C 'project':90C 'project-manag':89C 'provid':86C 'remov':156C 'requir':142C 'research':23B,34B,74C,94C 'research-data':22B 'restrict':126C 'self':26B,31B,81C 'self-host':25B,30B,80C 'skip':5A 'system':77C 'therefor':136C 'use':149C 'user':10A 'version':96C,166C 'web':35B,83C 'without':51B,120C,140C","nicknames":[],"mitigations":[],"who_affected":"Deployments of the LORIS neuroimaging research web application in the affected version ranges are exposed, where the API for the imaging_browser module is reachable by an authenticated user. Teams that no longer use the API can disable it to remove access to this endpoint, per the sources.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"first_public_at":"2026-10-30T22:16:54+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","cvss_by":"security-advisories@github.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-55147","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55147","severity":null,"published_at":"2026-10-30T22:16:54+00:00","modified_at":"2026-10-30T22:16:54+00:00","first_seen_at":"2026-10-30T22:25:56+00:00","fetched_at":"2026-10-30T22:25:56+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"}