CVE-2025-23521Network attack vector

Reflected script execution through undisclosed input handling

Published Mar 3, 2025 · Updated May 12, 2026

Reflected XSS in GoodLayers Goodlayers Blocks 1.0.1 and earlier allows remote attackers to run script in a privileged user’s browser. Patchstack has not disclosed the affected request parameter, code locus, or missing output-neutralization operation. Exploitation requires a privileged user to follow a crafted link or submit a crafted form, exposing browser-accessible data and actions.

CVSS severity7.1
High
EPSS probability0.36%
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 GoodLayers Goodlayers Blocks 1.0.1 and earlier allows remote attackers to run script in a privileged user’s browser. Patchstack has not disclosed the affected request parameter, code locus, or missing output-neutralization operation. Exploitation requires a privileged user to follow a crafted link or submit a crafted form, exposing browser-accessible data and actions.

The record

CVE
CVE-2025-23521
Published
Mar 3, 2025
Updated
May 12, 2026
Vendor
GoodLayers
Product
Goodlayers Blocks
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 3, 2025CVE publishedPublication date reported by the CVE source.
  2. May 12, 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 <=1.0.1 changes=[{"at":"1.0.3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GoodLayers · Goodlayers Blocksversion=0 <=1.0.1 changes=[{"at":"1.0.3","status":"unaffected"}]

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

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')
T1204.001User Execution: Malicious Link

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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