CVE-2026-2289 json
Taskbuilder <= 5.0.3 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Block Emails' Field
published 2026-03-04 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-9353
- cvss
- 4.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
The Taskbuilder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 5.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8 mo ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.4 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N |
Affected products
- taskbuilder Taskbuilder – Project Management & Task Management Tool With Kanban Board
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/81e26924-c9eb-4ddf-89e3-a8bf95d23b78?source=cve
- plugins.trac.wordpress.org /browser/taskbuilder/trunk/includes/admin/email_notifications/wppm_get_en_general_setting.php#L30
- plugins.trac.wordpress.org /browser/taskbuilder/tags/5.0.1/includes/admin/email_notifications/wppm_get_en_general_setting.php#L30
- plugins.trac.wordpress.org /browser/taskbuilder/trunk/includes/class-wppm-functions.php#L19
- plugins.trac.wordpress.org /browser/taskbuilder/tags/5.0.1/includes/class-wppm-functions.php#L19
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&old=3468819%40taskbuilder&new=3468819%40taskbuilder&sfp_email=&sfph
Sources
- CVE List CVE-2026-2289
- NVD CVE-2026-2289
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.