CVE-2025-25620Public exploitNetwork attack vector

Stored script execution via assignment PDF upload

Published Mar 10, 2025 · Updated Mar 10, 2025

Stored XSS in Unifiedtransform 2.0 allows remote authenticated users to execute scripts in other users' browsers via an assignment upload. The Create Assignment workflow accepts a PDF containing an XSS payload, stores it, and exposes it through View Assignment without preventing browser-side script execution. A teacher account is required to create the assignment, and execution occurs when another user opens it, exposing that user's session context to the script.

CVSS severity5.4
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Unifiedtransform 2.0 allows remote authenticated users to execute scripts in other users' browsers via an assignment upload. The Create Assignment workflow accepts a PDF containing an XSS payload, stores it, and exposes it through View Assignment without preventing browser-side script execution. A teacher account is required to create the assignment, and execution occurs when another user opens it, exposing that user's session context to the script.

The record

CVE
CVE-2025-25620
Published
Mar 10, 2025
Updated
Mar 10, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.002Malicious File

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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