CVE-2021-34646

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-24. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 51%
CISA-KEV: Not listedEPSS: 51%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
9.8
EG Score
9.8(medium)
EPSS
98.8%
KEV
Not listed

Published

August 30, 2021

Last Modified

November 21, 2024

References (4)

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 22:48 UTCEG score recompute
  2. 2026-07-22 14:06 UTCEPSS rescore
  3. 2026-07-22 14:06 UTCEPSS rescore
  4. 2026-07-21 15:22 UTCEPSS rescore
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  1. 2026-06-27 03:06 UTCEPSS rescore
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  22. 2026-06-10 22:16 UTCEPSS rescore
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  24. 2026-06-06 13:46 UTCEPSS rescore
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  27. 2026-06-05 22:45 UTCEPSS rescore
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  36. 2026-05-31 00:15 UTCEPSS rescore
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  38. 2026-05-29 13:42 UTCEPSS rescore
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  40. 2026-05-28 13:43 UTCEPSS rescore
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  42. 2026-05-27 13:39 UTCEPSS rescore
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  44. 2026-05-27 13:39 UTCEPSS rescore
  45. 2026-05-26 13:42 UTCEPSS rescore
  46. 2026-05-26 11:17 UTCEG score recompute
  47. 2026-05-26 11:17 UTCGHSA enrichment

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 GitHub PoC) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-50299
    First seen Sep 17, 2021

    WordPress Plugin WooCommerce Booster Plugin 5.4.3 - Authentication Bypass

    Open source ↗
  • GitHub PoCmotikan2010/CVE-2021-34646
    First seen Sep 4, 2021

    CVE-2021-34646 PoC

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-34646?
CVE-2021-34646 is a critical vulnerability published on August 30, 2021. Versions up to, and including, 5.4.3, of the Booster for WooCommerce WordPress plugin are vulnerable to authentication bypass via the processemailverification function due to a random token generation weakness in the resetandmailactivationlink function found in the…
When was CVE-2021-34646 disclosed?
CVE-2021-34646 was first published in the National Vulnerability Database on August 30, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-34646 actively exploited?
CVE-2021-34646 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-34646?
CVE-2021-34646 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2021-34646?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-34646, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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