CVE-2026-35403
Last modified
CVE-2026-35403 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 15.10 to before 27.0.3 and 28.0.1, there is a potential for a cross-site scripting attack in the survey_accounts module if a user provides an invalid visit label. EPSS estimates a 0.17% chance of exploitation in the next 30 days.
Description
LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 15.10 to before 27.0.3 and 28.0.1, there is a potential for a cross-site scripting attack in the survey_accounts module if a user provides an invalid visit label. While the data is properly JSON encoded, the Content-Type header is not set causing the web browser to interpret the payload as HTML, opening the possibility of a cross-site scripting if a user is tricked into following an invalid link. This vulnerability is fixed in 27.0.3 and 28.0.1.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mcgill | Loris | >= 15.10, <= 27.0.2 |
| Mcgill | Loris | 28.0.0 |
References
- https://github.com/aces/Loris/security/advisories/GHSA-776p-5pwh-vc8pPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-35403?
How severe is CVE-2026-35403?
How do I fix CVE-2026-35403?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-35398WeGIA is a Web manager for charitable institutions. Prior to…6.1
- CVE-2026-35399WeGIA is a Web manager for charitable institutions. Prior to…6.1
- CVE-2026-3540Inappropriate implementation in WebAudio in Google Chrome pr…8.8
- CVE-2026-35400LORIS (Longitudinal Online Research and Imaging System) is a…4.3
- CVE-2026-35401Saleor is an e-commerce platform. From 2.0.0 to before 3.23.…7.5
- CVE-2026-35402mcp-neo4j-cypher is an MCP server for executing Cypher queri…2.3
- CVE-2026-35404Open edX Platform enables the authoring and delivery of onli…6.1
- CVE-2026-35405libp2p-rust is the official rust language Implementation of …7.5
- CVE-2026-35406Aardvark-dns is an authoritative dns server for A/AAAA conta…7.5
- CVE-2026-35407Saleor is an e-commerce platform. From 2.10.0 to before 3.23…6.5
- CVE-2026-35408Directus is a real-time API and App dashboard for managing S…9.3
- CVE-2026-35409Directus is a real-time API and App dashboard for managing S…7.7
Are you affected by CVE-2026-35403?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
