CVE-2021-36879

CRITICALNVD 9.89.8—

9.8

Unauthenticated Privilege Escalation vulnerability in WordPress uListing plugin (versions <= 2.0.5). Possible if WordPress configuration allows user registration.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 69.2%
KEV: Not listed

Published

September 27, 2021

Last Modified

November 21, 2024

References (4)

audit@patchstackhttps://patchstack.com/database/vulnerability/ulisting/wordpress-ulisting-plugin-2-0-5-unauthenticated-privilege-escalation-vulnerability
audit@patchstackhttps://wordpress.org/plugins/ulisting/#developers
af854a3a-2127-422b-91ae-364da2661108https://patchstack.com/database/vulnerability/ulisting/wordpress-ulisting-plugin-2-0-5-unauthenticated-privilege-escalation-vulnerability
af854a3a-2127-422b-91ae-364da2661108https://wordpress.org/plugins/ulisting/#developers

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 19× 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.

2026-06-02 20:11 UTCepss_batch
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2026-05-31 22:29 UTCepss_batch
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2026-05-31 00:15 UTCepss_batch
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2026-05-27 13:39 UTCepss_batch
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2026-05-26 13:42 UTCepss_batch
2026-05-26 09:52 UTCEG score recompute
2026-05-26 09:52 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-36879?

CVE-2021-36879 is a critical vulnerability published on September 27, 2021. Unauthenticated Privilege Escalation vulnerability in WordPress uListing plugin (versions <= 2.0.5). Possible if WordPress configuration allows user registration.

When was CVE-2021-36879 disclosed?

CVE-2021-36879 was first published in the National Vulnerability Database on September 27, 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-2021-36879 actively exploited?

CVE-2021-36879 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 69.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-36879?

CVE-2021-36879 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-36879?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-36879, 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-2021-36879

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-36879?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)