CVE-2025-56313Public exploitNetwork attack vector

Session compromise via raw query-string rendering

Published Oct 30, 2025 · Updated Oct 30, 2025

Reflected XSS in JATOS 3.7.1 through 3.9.6 allows remote attackers to run JavaScript in a user's browser via a crafted study link. The studyEntry.scala.html template renders the untrusted code query parameter through @Html(queryString) inside a window.location.href assignment without contextual encoding. Execution requires a user to open the link; an authenticated administrator's session lets the script obtain a CSRF token and perform administrative actions.

CVSS severity6.1
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in JATOS 3.7.1 through 3.9.6 allows remote attackers to run JavaScript in a user's browser via a crafted study link. The studyEntry.scala.html template renders the untrusted code query parameter through @Html(queryString) inside a window.location.href assignment without contextual encoding. Execution requires a user to open the link; an authenticated administrator's session lets the script obtain a CSRF token and perform administrative actions.

The record

CVE
CVE-2025-56313
Published
Oct 30, 2025
Updated
Oct 30, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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