CVE-2021-24212

CRITICALNVD 9.89.8—Elevated

9.8

The WooCommerce Help Scout WordPress plugin before 2.9.1 (https://woocommerce.com/products/woocommerce-help-scout/) allows unauthenticated users to upload any files to the site which by default will end up in wp-content/uploads/hstmp.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 98.9%
KEV: Not listed

Published

April 5, 2021

Last Modified

November 21, 2024

References (4)

contact@wpscanhttp://dzv365zjfbd8v.cloudfront.net/changelogs/woocommerce-help-scout/changelog.txt
contact@wpscanhttps://wpscan.com/vulnerability/cf9305e8-f5bc-45c3-82db-0ef00fd46129
af854a3a-2127-422b-91ae-364da2661108http://dzv365zjfbd8v.cloudfront.net/changelogs/woocommerce-help-scout/changelog.txt
af854a3a-2127-422b-91ae-364da2661108https://wpscan.com/vulnerability/cf9305e8-f5bc-45c3-82db-0ef00fd46129

Weakness Classification(1)

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

CWE-434Unrestricted Upload of File with Dangerous Type

Data Freshness Timeline

(refreshed 7× in last 7d / 12× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-26 18:44 UTCEG score recompute
2026-05-26 18:44 UTCGHSA enrichment
2026-05-24 16:49 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Nucleihttp/cves/2021/CVE-2021-24212.yaml
First seen Jan 1, 2021
WooCommerce Help Scout - Arbitrary File Upload
Open source ↗

Frequently asked(5)

What is CVE-2021-24212?

CVE-2021-24212 is a critical vulnerability published on April 5, 2021. The WooCommerce Help Scout WordPress plugin before 2.9.1 (https://woocommerce.com/products/woocommerce-help-scout/) allows unauthenticated users to upload any files to the site which by default will end up in wp-content/uploads/hstmp.

When was CVE-2021-24212 disclosed?

CVE-2021-24212 was first published in the National Vulnerability Database on April 5, 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-2021-24212 actively exploited?

CVE-2021-24212 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-24212?

CVE-2021-24212 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-24212?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-24212, 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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CVE-2021-24212

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-24212?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)