CVE-2025-0209Network attack vector

Browser script execution via unencoded registration input

Published Sep 23, 2025 · Updated Sep 23, 2025

Reflected XSS in WSO2 Identity Server 7.0.0 before update level 87 allows remote attackers to run JavaScript through account registration. The account registration flow reflects a crafted payload into its response without proper output encoding, causing the browser to treat attacker-controlled text as executable content. Exploitation requires a victim to open the crafted request; script execution can alter the page, redirect the victim, or read browser data, but protected session cookies are not exposed.

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

Reflected XSS in WSO2 Identity Server 7.0.0 before update level 87 allows remote attackers to run JavaScript through account registration. The account registration flow reflects a crafted payload into its response without proper output encoding, causing the browser to treat attacker-controlled text as executable content. Exploitation requires a victim to open the crafted request; script execution can alter the page, redirect the victim, or read browser data, but protected session cookies are not exposed.

The record

CVE
CVE-2025-0209
Published
Sep 23, 2025
Updated
Sep 23, 2025
Vendor
WSO2
Product
WSO2 Identity Server
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 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=7.0.0 <7.0.0.87

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WSO2 · WSO2 Identity Serverversion=7.0.0 <7.0.0.87

Published CVSS scores

6.1WSO2CVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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