Security readout for executives and security teams
Plain-English summary
Booking Calendar for WordPress has a SQL injection flaw through version 9.4.3. An attacker with high privileges could manipulate database queries and potentially expose sensitive booking or site data. The rating is high because confidentiality impact is high, although the sources do not show public exploitation or a named fixed version.
Executive priority
Treat this as a high-priority WordPress plugin exposure, especially on sites handling customer bookings or personal data. It is not currently sourced as exploited in the wild, so prioritize inventory, vendor-confirmed update status, and privileged-account hardening.
Technical view
CVE-2023-23991 is CWE-89 in WPdevelop/Oplugins Booking Calendar. CVSS 3.1 is 7.6: network reachable, low complexity, high privileges required, no user interaction, changed scope, high confidentiality impact, no integrity impact, and low availability impact. Affected range is listed as through 9.4.3.
Likely exposure
Exposure is WordPress sites running the Booking Calendar plugin at version 9.4.3 or earlier. Risk is lower for sites with tightly controlled privileged accounts, but compromise of an administrator or similarly privileged account could make the issue relevant.
Exploitation context
The CVE bundle does not identify active exploitation, and KEV status is false. The high-privilege requirement is an important constraint, but SQL injection against a booking plugin can still matter where sensitive customer, reservation, or site metadata is stored.
Researcher notes
Evidence is limited to CVE and Patchstack-style vulnerability database material. The record names SQL injection and CVSS impact but does not provide exploit details, a specific vulnerable parameter, or a fixed version in the supplied bundle. Avoid assuming exploitability beyond the stated high-privilege SQL injection condition.
Mitigation direction
- Inventory WordPress sites using the Booking Calendar plugin.
- Check WPdevelop/Oplugins or WordPress plugin guidance for a fixed version.
- Upgrade beyond the affected range when a vendor-supported fix is confirmed.
- Restrict privileged WordPress access and enforce MFA for administrators.
- Monitor database and web logs for unusual privileged plugin activity.
Validation and detection
- Confirm installed Booking Calendar versions across all WordPress environments.
- Verify whether any instance is version 9.4.3 or earlier.
- Review privileged WordPress account activity during the exposure window.
- Check vendor advisories before declaring a specific version remediated.
- Document compensating controls if immediate upgrade is unavailable.
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-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. 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 lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-23991 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L
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:H/UI:N/S:C/C:H/I:N/A:L2.34.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.6HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://patchstack.com/database/vulnerability/booking/wordpress-booking-calendar-plugin-9-4-2-sql-injection?_s_id=cveCVE reference · vdb-entry
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 Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.