CVE-2026-12136 json
SysBasics Customize My Account for WooCommerce <= 4.3.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
published 4mo ago modified 4mo ago also EUVD-2026-37859
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
The Customize My Account For Woocommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sysbasics_user_avatar' shortcode in versions up to, and including, 4.3.6. This is due to insufficient input sanitization and output escaping on user supplied attributes (min_height, min_width, max_height, max_width) in the wcmamtx_get_avatar_default() function, which are concatenated unescaped into the get_avatar() extra_attr style attribute. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4mo ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected products
- phppoet SysBasics Customize My Account for WooCommerce – Dashboard, Endpoints, Avatar & Menu Manager
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/44d041ca-caa6-410d-b2d1-7a63208cc512?source=cve
- plugins.trac.wordpress.org /browser/customize-my-account-for-woocommerce/tags/4.3.6/include/wcmamtx_extra_functions.php#L163
- plugins.trac.wordpress.org /browser/customize-my-account-for-woocommerce/tags/4.3.6/include/sysbasics-avatar-upload.php#L524
- plugins.trac.wordpress.org /browser/customize-my-account-for-woocommerce/tags/4.3.6/include/sysbasics-avatar-upload.php#L573
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&old=3571110%40customize-my-account-for-woocommerce&new=3571110%40cu
Sources
- CVE List CVE-2026-12136
- NVD CVE-2026-12136
Fencer Intel 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.