CVE-2024-3027Network attack vector

Contributor-level stored XSS via unchecked SVG upload

Published Apr 13, 2024 · Updated Apr 8, 2026

Improper authorization in Smart Slider 3 3.5.1.22 and earlier allows remote authenticated users to upload files that enable stored XSS. The upload handler accepts limited file types, including SVG, without checking the caller's upload capability. Contributor-level access is sufficient to store active SVG content that executes in another user's browser, allowing unauthorized data access or changes.

CVSS severity6.4
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Smart Slider 3 3.5.1.22 and earlier allows remote authenticated users to upload files that enable stored XSS. The upload handler accepts limited file types, including SVG, without checking the caller's upload capability. Contributor-level access is sufficient to store active SVG content that executes in another user's browser, allowing unauthorized data access or changes.

The record

CVE
CVE-2024-3027
Published
Apr 13, 2024
Updated
Apr 8, 2026
Vendor
Nextendweb
Product
Smart Slider 3
Classifications
CWE-285, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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=0 <=3.5.1.22

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nextendweb · Smart Slider 3version=0 <=3.5.1.22

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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.

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

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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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