CVE-2025-15055Public exploitNetwork attack vector

Administrator script execution via unescaped event fields

Published Jan 9, 2026 · Updated Jan 9, 2026

Stored XSS in VeronaLabs SlimStat Analytics 5.3.4 and earlier allows remote attackers to run scripts in an administrator's browser. The Recent Custom Events report directly renders stored notes and resource values into HTML and link contexts without context-appropriate escaping. No authentication is required to submit the tracking data, but an administrator must open the report before the payload executes.

CVSS severity7.2
High
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 XSS in VeronaLabs SlimStat Analytics 5.3.4 and earlier allows remote attackers to run scripts in an administrator's browser. The Recent Custom Events report directly renders stored notes and resource values into HTML and link contexts without context-appropriate escaping. No authentication is required to submit the tracking data, but an administrator must open the report before the payload executes.

The record

CVE
CVE-2025-15055
Published
Jan 9, 2026
Updated
Jan 9, 2026
Vendor
VeronaLabs
Product
SlimStat Analytics
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=5.3.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

VeronaLabs · SlimStat Analyticsversion=* <=5.3.4

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
T1190Exploit Public-Facing Application

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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