FKIE_CVE-2026-35403

Vulnerability from fkie_nvd - Published: 2026-04-08 19:25 - Updated: 2026-04-21 20:06
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/aces/Loris/security/advisories/GHSA-776p-5pwh-vc8pPatch, Vendor Advisory
Impacted products
Vendor Product Version
mcgill loris *
mcgill loris 28.0.0
To clipboard 

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  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mcgill:loris:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4AEE921E-77AD-44F9-AC03-DCD447CF3897",
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              "versionStartIncluding": "15.10",
              "vulnerable": true
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  "cveTags": [],
  "descriptions": [
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      "value": "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."
    }
  ],
  "id": "CVE-2026-35403",
  "lastModified": "2026-04-21T20:06:28.810",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
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        "impactScore": 4.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
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        "exploitabilityScore": 2.3,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2026-04-08T19:25:23.893",
  "references": [
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      "source": "security-advisories@github.com",
      "tags": [
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      "url": "https://github.com/aces/Loris/security/advisories/GHSA-776p-5pwh-vc8p"
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  "vulnStatus": "Analyzed",
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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