Security readout for executives and security teams
Plain-English summary
This flaw lets an attacker craft a link that causes a vulnerable WordPress site using Scribble Maps to run attacker-supplied script in a user’s browser. It requires user interaction, so risk is lower than a server takeover, but it can still support phishing, session abuse, or content manipulation in the affected browser context.
Executive priority
Treat this as a moderate web application risk. It does not indicate server compromise by itself, but affected public WordPress sites should be identified and remediated because reflected XSS can damage trust and assist account or phishing attacks.
Technical view
CVE-2021-34651 is reflected cross-site scripting in the Scribble Maps WordPress plugin through the map parameter in includes/admin.php, affecting versions up to and including 1.2. The CVSS 3.1 score is 6.1, with network attack vector, low complexity, no privileges required, and required user interaction.
Likely exposure
Exposure is limited to WordPress sites that have the Scribble Maps plugin installed at version 1.2 or earlier. Sites without the plugin, or with versions outside the cited affected range, are not evidenced as affected by the provided sources.
Exploitation context
The sources do not indicate known active exploitation, and the CVE is not listed as KEV in the provided bundle. Exploitation requires a victim to interact with a crafted request or link, consistent with reflected XSS and the UI:R CVSS metric.
Researcher notes
Evidence identifies the vulnerable parameter and file, but the provided sources do not name a fixed version or active exploitation. Keep findings scoped to Scribble Maps WordPress plugin versions up to and including 1.2 unless additional vendor data confirms broader impact.
Mitigation direction
- Inventory WordPress sites for the Scribble Maps plugin and version.
- Check vendor or Wordfence guidance for a supported fixed release.
- Update the plugin if a vendor-supported fixed version is available.
- Disable or remove the plugin where it is not required.
- Use security controls as temporary compensation, not as a permanent fix.
Validation and detection
- Confirm whether Scribble Maps is installed on each WordPress site.
- Verify installed versions are not 1.2 or earlier.
- Review web logs for unusual requests involving the map parameter.
- Perform only approved, non-destructive XSS validation in staging.
- Document remediation status for each affected WordPress instance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-34651 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34651CVE reference · x_refsource_MISC
- https://plugins.trac.wordpress.org/browser/scribble-maps/trunk/includes/admin.php#L233CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.