CVE-2021-34646
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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 50.9%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 50.87% probability · 99th percentile
- Public exploits
- 1 in Exploit-DB · first 17 September 2021
- CISA KEV
- Not listed
- Weakness
- CWE-290, CWE-330
- Affected
- booster/booster for woocommerce
- Source
- security@wordfence.com
EPSS 50.9% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2581212%40woocommerce-jetpack&new=2581212%40woocommerce-jetpack&sfp_email=&sfph_mail=Patch, Third Party Advisory
- https://www.wordfence.com/blog/2021/08/critical-authentication-bypass-vulnerability-patched-in-booster-for-woocommerce/Exploit, Third Party Advisory
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2581212%40woocommerce-jetpack&new=2581212%40woocommerce-jetpack&sfp_email=&sfph_mail=Patch, Third Party Advisory
- https://www.wordfence.com/blog/2021/08/critical-authentication-bypass-vulnerability-patched-in-booster-for-woocommerce/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.