CVE-2025-54057Network attack vector

Stored script execution via unrestricted widget URL

Published Nov 27, 2025 · Updated Apr 13, 2026

Stored XSS in Apache SkyWalking 10.2.0 and earlier allows remote attackers to execute script in UI users' browsers via a widget URL. The Booster UI ThirdPartyApp widget accepted an arbitrary URL and loaded it in an unsandboxed iframe without restricting its scheme or normalizing the value. Execution requires a user to render the configured widget and occurs in the SkyWalking UI origin, exposing data and actions available to that user's session.

CVSS severity6.1
Medium
EPSS probability0.76%
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 Apache SkyWalking 10.2.0 and earlier allows remote attackers to execute script in UI users' browsers via a widget URL. The Booster UI ThirdPartyApp widget accepted an arbitrary URL and loaded it in an unsandboxed iframe without restricting its scheme or normalizing the value. Execution requires a user to render the configured widget and occurs in the SkyWalking UI origin, exposing data and actions available to that user's session.

The record

CVE
CVE-2025-54057
Published
Nov 27, 2025
Updated
Apr 13, 2026
Vendor
The Apache Software Foundation
Product
Apache SkyWalking
Classifications
CWE-80, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 13, 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 <=10.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache SkyWalkingversion=0 <=10.2.0

Published CVSS scores

6.1GitHub Advisory DatabaseCVSS: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-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
T1203Exploitation for Client Execution

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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