How severe is CVE-2021-37390?

CVE-2021-37390 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-37390 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37390?

CVE-2021-37390 affects Chamilo Chamilo Lms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37390?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-37390 published?

CVE-2021-37390 was published on 2021-08-10 and last updated on 2026-06-17.

CVE-2021-37390

CVE-2021-37390 is a medium-severity vulnerability in Chamilo Chamilo Lms with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Chamilo Chamilo Lms
Published: 2021-08-10
Last modified: 2026-06-17

Description

A Chamilo LMS 1.11.14 reflected XSS vulnerability exists in main/social/search.php=q URI (social network search feature).

Frequently asked questions

What is CVE-2021-37390?: A Chamilo LMS 1.11.14 reflected XSS vulnerability exists in main/social/search.php=q URI (social network search feature).
How severe is CVE-2021-37390?: CVE-2021-37390 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-37390 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37390?: CVE-2021-37390 affects Chamilo Chamilo Lms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37390?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-37390 published?: CVE-2021-37390 was published on 2021-08-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*

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