CVE-2021-34646
highpriority · attend · 67OT risk · highEPSS 0.509 · 99 %ileexploit · PoCEUUSEPSS · scored 2026-10-26
Versions up to, and including, 5.4.3, of the Booster for WooCommerce WordPress plugin are vulnerable to authentication bypass via the process_email_verification function due to a random token generation weakness in the reset_and_mail_activation_link function found in the ~/includes/class-wcj-emails-verification.php file. This allows attackers to impersonate users and trigger an email address verification for arbitrary accounts, including administrative accounts, and automatically be logged in as that user, including any site administrators. This requires the Email Verification module to be active in the plugin and the Login User After Successful Verification setting to be enabled, which it is by default.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (3)
Public proof-of-concept and weaponised exploit code.
- 0xB455/CVE-2021-34646PoC for CVE-2021-34646PoC · poc_in_github
- motikan2010/CVE-2021-34646CVE-2021-34646 PoCPoC · poc_in_github
affected products (2)
Products and version ranges known to be affected.
- booster booster for woocommerce≤ 5.4.3nvdUScpe:2.3:a:booster:booster_for_woocommerce:*:*:*:*:*:*:*:*
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2581212%40woocommerce-jetpack&new=2581212%40woocommerce-jetpack&sfp_email=&sfph_mail=cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021090311cnnvd
- https://www.wordfence.com/blog/2021/08/critical-authentication-bypass-vulnerability-patched-in-booster-for-woocommerce/cnnvd
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2581212%40woocommerce-jetpack&new=2581212%40woocommerce-jetpack&sfp_email=&sfph_mail=enisa_euvd
- https://www.wordfence.com/blog/2021/08/critical-authentication-bypass-vulnerability-patched-in-booster-for-woocommerce/enisa_euvd
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2581212%40woocommerce-jetpack&new=2581212%40woocommerce-jetpack&sfp_email=&sfph_mail=PatchThird Party Advisorynvd
- https://www.wordfence.com/blog/2021/08/critical-authentication-bypass-vulnerability-patched-in-booster-for-woocommerce/ExploitThird Party Advisorynvd
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