How severe is CVE-2021-4347?

CVE-2021-4347 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.

Is CVE-2021-4347 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4347?

CVE-2021-4347 affects Zorem Advanced Shipment Tracking For Woocommerce. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4347?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-4347 published?

CVE-2021-4347 was published on 2023-06-07 and last updated on 2026-06-17.

CVE-2021-4347

CVE-2021-4347 is a critical-severity vulnerability in Zorem Advanced Shipment Tracking For Woocommerce with a CVSS 3.x base score of 9.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Zorem Advanced Shipment Tracking For Woocommerce
Published: 2023-06-07
Last modified: 2026-06-17

Description

The function update_shipment_status_email_status_fun in the plugin Advanced Shipment Tracking for WooCommerce in versions up to 3.2.6 is vulnerable to authenticated arbitrary options update. The function allows attackers (including those at customer level) to update any WordPress option in the database. Version 3.2.5 was initially released as a fix, but doesn't fully address the issue.

Frequently asked questions

What is CVE-2021-4347?: The function update_shipment_status_email_status_fun in the plugin Advanced Shipment Tracking for WooCommerce in versions up to 3.2.6 is vulnerable to authenticated arbitrary options update. The function allows attackers (including those at customer level) to update any WordPress option in the database. Version 3.2.5 was initially released as a fix, but doesn't fully address the issue.
How severe is CVE-2021-4347?: CVE-2021-4347 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.
Is CVE-2021-4347 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4347?: CVE-2021-4347 affects Zorem Advanced Shipment Tracking For Woocommerce. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4347?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-4347 published?: CVE-2021-4347 was published on 2023-06-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:zorem:advanced_shipment_tracking_for_woocommerce:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Zorem Advanced Shipment Tracking For Woocommerce

CVE-2022-41635 — Medium (CVSS 4.3): Cross-Site Request Forgery (CSRF) vulnerability in Zorem Advanced Shipment Tracking for WooCommerce plugin <= 3.5.2…

All CVEs affecting Zorem Advanced Shipment Tracking For Woocommerce →

Other CWE-862 (Missing Authorization) vulnerabilities

CVE-2026-65667 — Critical (CVSS 10.0): Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-48168 — Critical (CVSS 10.0): PraisonAI is a multi-agent teams system. In versions prior to 4.6.40, the bundled Claude GitHub Actions workflow is…
CVE-2026-66012 — Critical (CVSS 10.0): SiYuan before v3.7.2 contains a missing authorization vulnerability in the POST /mcp kernel endpoint, which is gated…
CVE-2026-58275 — Critical (CVSS 10.0): Missing authorization in Azure DNS allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-0092 — Critical (CVSS 10.0): In Package Manager, there is a possible device lock controller bypass due to a missing permission check. This could…
CVE-2026-33712 — Critical (CVSS 10.0): Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST…

Browse all CWE-862 (Missing Authorization) vulnerabilities →