CVE-2025-48206Public exploitNetwork attack vector

Stored XSS via raw backup-log rendering

Published May 21, 2025 · Updated May 21, 2025

Stored XSS in TYPO3 Backup Plus before 13.0.1 allows remote authenticated users to run JavaScript when backup history is viewed. The Backuprestore.html template passes backup logs containing the attacker-controlled backup name through f:format.raw, processing it without HTML encoding. Exploitation requires administrative backend access to create the crafted backup and a second user to open Backup History; script execution is confined to that user’s browser context.

CVSS severity6.1
Medium
EPSS probability0.23%
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 TYPO3 Backup Plus before 13.0.1 allows remote authenticated users to run JavaScript when backup history is viewed. The Backuprestore.html template passes backup logs containing the attacker-controlled backup name through f:format.raw, processing it without HTML encoding. Exploitation requires administrative backend access to create the crafted backup and a second user to open Backup History; script execution is confined to that user’s browser context.

The record

CVE
CVE-2025-48206
Published
May 21, 2025
Updated
May 21, 2025
Vendor
in2code GmbH
Product
TYPO3 Backup Plus
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 21, 2025CVE publishedPublication date reported by the CVE source.
  2. May 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <13.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

in2code GmbH · TYPO3 Backup Plusversion=0 <13.0.1

Published CVSS scores

2.7GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U
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.

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
Privilegesadmin
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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