Security readout for executives and security teams
Plain-English summary
TrueBooker versions through 1.2.6 reportedly allow an unauthenticated attacker to gain elevated privileges. Successful compromise could expose sensitive information, permit unauthorized changes, and disrupt the affected WordPress site. The supplied sources do not identify a patched version or confirm exploitation in the wild.
Executive priority
Treat this as an immediate inventory and remediation priority for internet-facing WordPress sites. Owners should rapidly identify TrueBooker installations, apply confirmed vendor guidance, and investigate unexpected administrator changes. Sites unable to confirm a safe release should consider disabling the plugin while assessing business impact.
Technical view
CVE-2026-73347 is an unauthenticated privilege-escalation vulnerability in the WordPress TrueBooker plugin through version 1.2.6. It is classified as CWE-266 and scored CVSS 3.1 9.8: network-accessible, low complexity, no privileges or user interaction required, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress installations running the TrueBooker appointment-booking plugin at version 1.2.6 or earlier. Publicly reachable sites are the principal concern. The bundle contains inconsistent affected-product metadata, listing versions as “n/a” and default status as unaffected, so inventories should verify the installed plugin and version directly.
Exploitation context
The supplied record does not establish active exploitation, and the CVE is not listed as KEV in the bundle. Nevertheless, unauthenticated remote reachability, low attack complexity, and potential full-impact privilege escalation make vulnerable public sites attractive targets. No exploit procedure or technical root-cause detail is provided.
Researcher notes
The public bundle provides severity, vector, weakness classification, and the affected-version ceiling, but no vulnerable code path, fixed version, patch details, or exploitation evidence. The structured affected entry conflicts with the title and description by showing “n/a” versions and default unaffected status. Preserve that uncertainty when correlating scanner results.
Mitigation direction
- Identify every WordPress site running TrueBooker and record its installed version.
- Check ThemetechMount and Patchstack guidance for a confirmed fixed release or vendor-approved mitigation.
- Update to a vendor-confirmed safe version when available.
- Disable or remove TrueBooker until remediated if operationally feasible.
- Restrict administrative access and monitor affected sites for suspicious privilege changes.
Validation and detection
- Confirm the plugin slug and version from trusted WordPress inventory or deployment records.
- Verify installed versions are newer than 1.2.6 only after vendor confirmation they are fixed.
- Review WordPress administrator accounts for unexpected additions or privilege changes.
- Examine security and application logs for unexplained account-management activity.
- Re-scan after remediation using an updated vulnerability source.
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-266: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-73347 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
SSVC decision data
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:N/S:U/C:H/I:H/A:H3.95.9PatchstackVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://patchstack.com/database/wordpress/plugin/truebooker-appointment-booking/vulnerability/wordpress-truebooker-plugin-1-2-6-privilege-escalation-vulnerability?_s_id=cveCVE reference, Patchstack · 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.
Incorrect Privilege Assignment
Incorrect Privilege Assignment represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.