CVE-2021-43136

CRITICALNVD 9.89.8—Elevated

9.8

An authentication bypass issue in FormaLMS <= 2.4.4 allows an attacker to bypass the authentication mechanism and obtain a valid access to the platform.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 94.3%
KEV: Not listed

Published

November 10, 2021

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated May 26, 2026

No patch confirmed yet.

generic

Forma Learning Management System

https://formalms.org

generic

Hacktive Security – Advanced Cyber Security Services

https://blog.hacktivesecurity.com

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 20× 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
2026-06-04 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 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:44 UTCEG score recompute
2026-05-26 07:44 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch

Publicly available exploits

(1 reference)

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

Exploit-DBEDB-50513
First seen Nov 11, 2021
FormaLMS 2.4.4 - Authentication Bypass
Open source ↗

Frequently asked(5)

What is CVE-2021-43136?

CVE-2021-43136 is a critical vulnerability published on November 10, 2021. An authentication bypass issue in FormaLMS <= 2.4.4 allows an attacker to bypass the authentication mechanism and obtain a valid access to the platform.

When was CVE-2021-43136 disclosed?

CVE-2021-43136 was first published in the National Vulnerability Database on November 10, 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-2021-43136 actively exploited?

CVE-2021-43136 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-43136?

CVE-2021-43136 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-43136?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-43136, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-43136

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CVE-2021-43136

📅 Published

🔄 Last Modified

📋 Advisory Details (2)