{"id":"CVE-2026-55147","title":"LORIS has incorrect access checks in API for Imaging Browser","summary":"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 `…","severity":"medium","cvss":6.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","cvssSource":"cna","cwe":["CWE-862"],"vendor":"aces","product":"Loris","affected":["Loris >= 22.0.0, < 27.0.4","Loris >= 28.0.0, < 28.0.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-02T14:41:46.832954Z"},"published":"2026-10-30","updated":"2026-11-02","sourceUpdated":"2026-11-02T14:41:58.905Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-55147","references":[{"url":"https://github.com/aces/Loris/security/advisories/GHSA-m48r-jv24-jjcx","label":"https://github.com/aces/Loris/security/advisories/GHSA-m48r-jv24-jjcx"},{"url":"https://github.com/aces/Loris/pull/10531","label":"https://github.com/aces/Loris/pull/10531"},{"url":"https://github.com/aces/Loris/commit/b13053597530ee33fbced35085d2490bc9ccc03a","label":"https://github.com/aces/Loris/commit/b13053597530ee33fbced35085d2490bc9ccc03a"},{"url":"https://github.com/aces/Loris/releases/tag/v27.0.4","label":"https://github.com/aces/Loris/releases/tag/v27.0.4"},{"url":"https://github.com/aces/Loris/releases/tag/v28.0.2","label":"https://github.com/aces/Loris/releases/tag/v28.0.2"}],"tags":["cve.org"],"epss":0.00215,"epssPercentile":0.11982,"ingestedAt":"2026-11-05T19:30:42.669Z","slug":"CVE-2026-55147","body":"## Overview\n\nLORIS (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.\n\n## Affected\n\n- `Loris >= 22.0.0, < 27.0.4`\n- `Loris >= 28.0.0, < 28.0.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":34.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}