CVE-2026-55147— LORIS has incorrect access checks in API for Imaging Browser

Quick assessment

Affected

aces Loris

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LORIS（纵向在线研究与成像系统）是一款自托管的 Web 应用，为神经影像研究提供数据与项目管理功能。在 22.0.0 至 27.0.4（不含 27.0.4）以及 28.0.0 至 28.0.2（不含 28.0.2）的版本中，模块的允许在未经前端权限检查的情况下修改影像数据，而该前端权限本应用于限制在 Imaging Browser 中的编辑操作。因此，已认证的调用者可在缺乏必要编辑授权的情况下修改影像数据。若部署环境已不再使用，可通过禁用该功能来移除对此端点的访问。该问题已在 27.0.4 和 28.0

CVSS 6.3 · Medium Updated Oct 31, 2026

Possible ATT&CK Techniques 3 AI

T1068 · Exploitation for Privilege Escalation T1562 T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

LORIS has incorrect access checks in API for Imaging Browser

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

授权机制缺失

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
aces	Loris	>= 22.0.0, < 27.0.4	-

II. Public POCs for CVE-2026-55147

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-55147

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Other References for CVE-2026-55147 (5)

https://github.com/aces/Loris/pull/10531 x_refsource_MISC
https://github.com/aces/Loris/releases/tag/v27.0.4 x_refsource_MISC
https://github.com/aces/Loris/releases/tag/v28.0.2 x_refsource_MISC
https://github.com/aces/Loris/security/advisories/GHSA-m48r-jv24-jjcx x_refsource_CONFIRM
https://github.com/aces/Loris/commit/b13053597530ee33fbced35085d2490bc9ccc03a x_refsource_MISC

https://www.cve.org/CVERecord?id=CVE-2026-55147

IV. Related Vulnerabilities

Same product: Loris

Same vendor: aces

Same weakness: CWE-862