Security readout for executives and security teams
Plain-English summary
A critical SQL injection flaw is reported in the WordPress If-So Dynamic Content Personalization plugin through version 1.10. Successful exploitation could expose database information and disrupt service. The available evidence does not establish active exploitation, and the source bundle does not identify a confirmed fixed version.
Executive priority
Treat this as an urgent investigation and remediation item for internet-facing WordPress sites. Identify affected installations immediately and reduce exposure. Escalate any evidence of suspicious database activity, but do not describe the vulnerability as actively exploited without additional authoritative evidence.
Technical view
CVE-2026-66446 is classified as CWE-89 with CVSS 3.1 score 9.3. The vector describes remote, low-complexity exploitation without authentication or user interaction, with high confidentiality and low availability impact. However, the description calls it “Subscriber SQL Injection,” creating uncertainty about required privileges.
Likely exposure
WordPress sites running the If-So plugin at version 1.10 or earlier should be treated as potentially exposed. Actual reachability depends on the vulnerable functionality and access requirements, which are not detailed in the supplied sources. The affected-product metadata is incomplete and lists no CPEs.
Exploitation context
CISA KEV status is false in the supplied bundle, and no cited source establishes exploitation in the wild. No public exploit details are provided here. Risk remains substantial because the CVSS vector indicates network accessibility, low complexity, no authentication, and no user interaction.
Researcher notes
Evidence is incomplete and internally ambiguous: the description says subscriber-level SQL injection, while the CVSS vector specifies no privileges. The affected record also provides no exact version range beyond the title and description, no CPEs, and no confirmed fix. Validate prerequisites and remediation against current vendor or Patchstack guidance.
Mitigation direction
- Check Patchstack and vendor guidance immediately for a confirmed fixed release or official mitigation.
- Update to a vendor-confirmed safe version when one is documented.
- Temporarily deactivate the plugin if business operations permit and no confirmed fix is available.
- Apply database and web-request monitoring as compensating controls, not as a verified fix.
Validation and detection
- Inventory WordPress sites for the if-so plugin and record installed versions.
- Prioritize installations running version 1.10 or earlier for review.
- Review web and database logs for anomalous plugin-related requests, SQL errors, or unexpected data access.
- Confirm the plugin is deactivated or upgraded to a vendor-confirmed safe version.
- Assess whether subscriber registration or subscriber accounts increase reachable attack surface.
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-2026-66446 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
- 9.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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.
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:C/C:H/I:N/A:L3.94.7PatchstackVulnerability scoring details
Base CVSS 3.1 score
9.3CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
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/if-so/vulnerability/wordpress-if-so-dynamic-content-personalization-plugin-1-10-sql-injection-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.
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.