CVE-2026-2827Network attack vector

Unauthenticated stored script execution via unescaped notification input

Published Jun 11, 2026 · Updated Jun 11, 2026

Stored XSS in 100plugins Open User Map PRO 1.4.31 and earlier allows remote attackers to execute scripts via a crafted notification. The plugin accepts the oum_location_notification parameter without sufficient sanitization and later renders it without context-appropriate escaping. No authentication is required to store the payload, but execution requires a user to open the affected page, exposing that browser session to script-controlled content.

CVSS severity4.7
Medium
EPSS probability0.19%
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 100plugins Open User Map PRO 1.4.31 and earlier allows remote attackers to execute scripts via a crafted notification. The plugin accepts the oum_location_notification parameter without sufficient sanitization and later renders it without context-appropriate escaping. No authentication is required to store the payload, but execution requires a user to open the affected page, exposing that browser session to script-controlled content.

The record

CVE
CVE-2026-2827
Published
Jun 11, 2026
Updated
Jun 11, 2026
Vendor
100plugins
Product
Open User Map PRO
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 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 <=1.4.31

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

100plugins · Open User Map PROversion=0 <=1.4.31

Published CVSS scores

4.7WordfenceCVSS:3.1/AV:N/AC:H/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1190Exploit Public-Facing Application

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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