How severe is CVE-2021-35415?

CVE-2021-35415 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-35415 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35415?

CVE-2021-35415 affects Chamilo Chamilo Lms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-35415?

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

When was CVE-2021-35415 published?

CVE-2021-35415 was published on 2021-12-03 and last updated on 2026-06-17.

CVE-2021-35415

CVE-2021-35415 is a medium-severity vulnerability in Chamilo Chamilo Lms with a CVSS 3.x base score of 4.8. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Chamilo Chamilo Lms
Published: 2021-12-03
Last modified: 2026-06-17

Description

A stored cross-site scripting (XSS) vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload in the course "Title" and "Content" fields.

Frequently asked questions

What is CVE-2021-35415?: A stored cross-site scripting (XSS) vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload in the course "Title" and "Content" fields.
How severe is CVE-2021-35415?: CVE-2021-35415 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-35415 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35415?: CVE-2021-35415 affects Chamilo Chamilo Lms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-35415?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-35415 published?: CVE-2021-35415 was published on 2021-12-03 and last updated on 2026-06-17.

References

Affected products (1)

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

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