CVE-2025-3527Network attack vector

Subscriber-level stored XSS via missing capability check

Published May 17, 2025 · Updated Apr 8, 2026

Stored XSS in AshanJay Designs LLC EventON 4.9.6 and earlier allows remote authenticated users to inject scripts into event pages. The settings logic in assets/lib/settings/settings.js accepts a settings change without checking the caller's WordPress capability. Subscriber-level access is sufficient, and the stored script runs when another user opens an injected page.

CVSS severity6.4
Medium
EPSS probability0.20%
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 AshanJay Designs LLC EventON 4.9.6 and earlier allows remote authenticated users to inject scripts into event pages. The settings logic in assets/lib/settings/settings.js accepts a settings change without checking the caller's WordPress capability. Subscriber-level access is sufficient, and the stored script runs when another user opens an injected page.

The record

CVE
CVE-2025-3527
Published
May 17, 2025
Updated
Apr 8, 2026
Vendor
AshanJay Designs LLC
Product
EventON
Classifications
CWE-862, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=4.9.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

AshanJay Designs LLC · EventONversion=0 <=4.9.6

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
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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