How severe is CVE-2021-40662?

CVE-2021-40662 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-40662 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40662?

CVE-2021-40662 affects Chamilo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40662?

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

When was CVE-2021-40662 published?

CVE-2021-40662 was published on 2022-03-21 and last updated on 2026-06-17.

CVE-2021-40662

CVE-2021-40662 is a high-severity vulnerability in Chamilo with a CVSS 3.x base score of 8.8. 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Chamilo
Published: 2022-03-21
Last modified: 2026-06-17

Description

A Cross-Site Request Forgery (CSRF) in Chamilo LMS 1.11.14 allows attackers to execute arbitrary commands on victim hosts via user interaction with a crafted URL.

Frequently asked questions

What is CVE-2021-40662?: A Cross-Site Request Forgery (CSRF) in Chamilo LMS 1.11.14 allows attackers to execute arbitrary commands on victim hosts via user interaction with a crafted URL.
How severe is CVE-2021-40662?: CVE-2021-40662 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-40662 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40662?: CVE-2021-40662 affects Chamilo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40662?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-40662 published?: CVE-2021-40662 was published on 2022-03-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:chamilo:chamilo:1.11.14:-:*:*:*:*:*:*

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