Security readout for executives and security teams
Plain-English summary
CVE-2026-1639 affects the Taskbuilder WordPress project/task management plugin through version 5.0.2. A logged-in user with Subscriber-level access or higher could abuse vulnerable sorting parameters to read sensitive database information. This is not listed as known exploited in CISA KEV, but it matters for sites allowing user registration or many low-privilege accounts.
Executive priority
Treat as a timely remediation item for WordPress sites using Taskbuilder, particularly public-facing sites with user registration. It is not currently supported as actively exploited by the provided sources, but it can expose sensitive database content to low-privilege authenticated users.
Technical view
The plugin is vulnerable to time-based blind SQL injection in the `order` and `sort_by` parameters due to insufficient escaping and query preparation. The issue is classified as CWE-89 with CVSS 3.1 score 6.5, network exploitable, low complexity, requiring low privileges, no user interaction, and high confidentiality impact.
Likely exposure
WordPress sites running Taskbuilder – WordPress Project Management & Task Management plugin versions up to and including 5.0.2 are potentially exposed, especially where Subscriber accounts are available to untrusted users.
Exploitation context
Sources describe authenticated exploitation requiring Subscriber-level or higher access. The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The main risk is confidential data extraction from the WordPress database through blind SQL injection.
Researcher notes
The cited WordPress Trac references point to the relevant Taskbuilder 5.0.2 project list code locations. Public details identify vulnerable parameters and root cause, but the provided sources do not name a fixed version. Avoid assuming a patch exists without confirming vendor or repository updates.
Mitigation direction
- Inventory WordPress sites for the Taskbuilder plugin and installed version.
- If running version 5.0.2 or earlier, check vendor guidance for an update or remediation.
- Restrict or disable public user registration where not required.
- Remove or disable the plugin if it is not business-critical.
- Review Subscriber and other low-privilege accounts for unnecessary access.
Validation and detection
- Confirm whether Taskbuilder is installed on each WordPress site.
- Record the plugin version and compare it to versions up to 5.0.2.
- Check whether untrusted users can obtain Subscriber-level access.
- Review web and WordPress logs for unusual authenticated access to Taskbuilder project list features.
- Monitor Wordfence and WordPress plugin sources for fixed-version information.
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-2026-1639 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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:L/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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.