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CVE Record

CVE-2023-6808: Booking for Appointments and Events Calendar – Amelia <= 1.0.93 - Authenticated(Contributor+) Stored Cross-Site Scripting via shortcode

The Booking for Appointments and Events Calendar – Amelia plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 1.0.93 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

MediumCVSS 6.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a stored cross-site scripting issue in the WordPress Amelia booking plugin. A contributor-level user or higher could place unsafe script content through plugin shortcode attributes, causing code to run when someone views the affected page. Business risk is strongest where many users can create or edit WordPress content.

Executive priority

Treat this as a moderate-priority web application risk. Prioritize sites with external contributors, shared editor accounts, or privileged administrators who regularly view contributor-created pages.

Technical view

CVE-2023-6808 is CWE-79 stored XSS in Amelia up to and including 1.0.93. Sources cite insufficient sanitization and output escaping for user-supplied shortcode attributes, with authenticated Contributor+ access required. CVSS 3.1 is 6.4 with low attack complexity, changed scope, and limited confidentiality and integrity impact.

Likely exposure

Exposure is likely limited to WordPress sites running the Amelia plugin at version 1.0.93 or earlier, especially where Contributor-level accounts are broadly assigned or compromised.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. The issue requires authenticated Contributor+ access, but stored XSS can affect later page viewers, including administrators, if malicious shortcode content is published.

Researcher notes

Evidence points to shortcode attribute handling in view/frontend/events.inc.php. The CVE description and Wordfence reference support the Contributor+ stored XSS condition. The provided sources do not include exploit code, active exploitation evidence, or a clearly named fixed version.

Mitigation direction

  • Check vendor and WordPress plugin guidance for the fixed Amelia release.
  • Update Amelia beyond affected versions once the vendor-confirmed fix is identified.
  • Restrict Contributor+ permissions to trusted users only.
  • Review and remove suspicious Amelia shortcode attributes in posts and pages.
  • Investigate recent content changes by Contributor+ accounts.

Validation and detection

  • Inventory WordPress sites using Amelia and record installed plugin versions.
  • Confirm whether any site runs Amelia 1.0.93 or earlier.
  • Review pages and posts containing Amelia shortcodes for unsafe attributes.
  • Compare local plugin code with the referenced WordPress changeset.
  • Check security logs for suspicious edits by Contributor+ users.
Prepared
Confidence
high
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · medium confidence lookup

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.

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cve · low confidence lookup

CVE-2023-6808 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
6.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.4Medium
CVSS 3.1 vector shape for CVE-2023-6808Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
ameliabookingBooking for Appointments and Events Calendar – Amelia0unaffected
Weakness

CWE details

CWE-79

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-79 · source CWE mapping

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.

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