CVE-2025-70797Public exploitNetwork attack vector

Stored browser script execution via unencoded sidebar fields

Published Apr 9, 2026 · Updated Apr 9, 2026

Stored cross-site scripting in LimeSurvey 6.15.20+251021 allows remote authenticated users to execute script in an administrator's browser. The SideBarWidget side_bar.php view places stored Box title and URL values into HTML attributes without encoding, allowing injected event handlers. An authenticated user must create or edit a homepage box, and execution occurs when an administrator opens the dashboard and interacts with the rendered button.

CVSS severity6.1
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in LimeSurvey 6.15.20+251021 allows remote authenticated users to execute script in an administrator's browser. The SideBarWidget side_bar.php view places stored Box title and URL values into HTML attributes without encoding, allowing injected event handlers. An authenticated user must create or edit a homepage box, and execution occurs when an administrator opens the dashboard and interacts with the rendered button.

The record

CVE
CVE-2025-70797
Published
Apr 9, 2026
Updated
Apr 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 2026Record 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

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.

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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')
T1203Exploitation for Client Execution

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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