CVE-2025-2748Public exploitNetwork attack vector

Stored XSS via ZIP-contained SVG retrieval

Published Mar 24, 2025 · Updated Dec 27, 2025

Stored XSS in Kentico Xperience through 13.0.178 allows remote attackers to run script in a victim's browser via a crafted upload. The unauthenticated MultiFileUploader handler stores an allowed ZIP in a predictable temporary path, and GetResource.ashx extracts an embedded SVG and serves it with an executable image MIME type. A victim must open the crafted resource URL; the embedded JavaScript then executes in that victim's browser context.

CVSS severity7.1
High
EPSS probability60.59%
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 Kentico Xperience through 13.0.178 allows remote attackers to run script in a victim's browser via a crafted upload. The unauthenticated MultiFileUploader handler stores an allowed ZIP in a predictable temporary path, and GetResource.ashx extracts an embedded SVG and serves it with an executable image MIME type. A victim must open the crafted resource URL; the embedded JavaScript then executes in that victim's browser context.

The record

CVE
CVE-2025-2748
Published
Mar 24, 2025
Updated
Dec 27, 2025
Vendor
Kentico
Product
Kentico Xperience
Classifications
CWE-434, CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 27, 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?

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

  1. Affected versionversion=0 <=13.0.178

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kentico · Kentico Xperienceversion=0 <=13.0.178

Published CVSS scores

7.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.1VulnCheckCVSS: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 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-434Unrestricted Upload of File with Dangerous Type
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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