CVE-2021-34651Network attack vector

Script execution via unencoded map parameter

Published Aug 16, 2021 · Updated May 5, 2025

Reflected XSS in the Scribble Maps WordPress plugin 1.2 and earlier allows remote attackers to execute scripts via the map parameter. The plugin’s includes/admin.php code places the map parameter into an administrative page response without context-appropriate output encoding. Exploitation requires a victim to follow a crafted request, and the injected script runs in that victim’s browser context.

CVSS severity6.1
Medium
EPSS probability0.90%
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 the Scribble Maps WordPress plugin 1.2 and earlier allows remote attackers to execute scripts via the map parameter. The plugin’s includes/admin.php code places the map parameter into an administrative page response without context-appropriate output encoding. Exploitation requires a victim to follow a crafted request, and the injected script runs in that victim’s browser context.

The record

CVE
CVE-2021-34651
Published
Aug 16, 2021
Updated
May 5, 2025
Vendor
Scribble Maps
Product
Scribble Maps
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 16, 2021CVE publishedPublication date reported by the CVE source.
  2. May 5, 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=1.2 <=1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Scribble Maps · Scribble Mapsversion=1.2 <=1.2

Published CVSS scores

4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1WordfenceCVSS: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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