How severe is CVE-2025-55208?

CVE-2025-55208 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-55208 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55208?

CVE-2025-55208 affects Chamilo Chamilo Lms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55208?

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

Does CVE-2025-55208 have an EU (EUVD) identifier?

Yes. CVE-2025-55208 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208326.

When was CVE-2025-55208 published?

CVE-2025-55208 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2025-55208

CVE-2025-55208 is a critical-severity vulnerability in Chamilo Chamilo Lms with a CVSS 3.x base score of 9.0. 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: Critical (CVSS 3.x base score 9.0)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208326
Weakness: CWE-79
Affected product: Chamilo Chamilo Lms
Published: 2026-03-05
Last modified: 2026-06-17

Description

Chamilo is a learning management system. Versions prior to 1.11.34 have a Stored XSS through insecure file uploads in `Social Networks`. Through it, a low-privilege user can execute arbitrary code in the admin user inbox, allowing takeover of the admin account. Version 1.11.34 fixes the issue.

Frequently asked questions

What is CVE-2025-55208?: Chamilo is a learning management system. Versions prior to 1.11.34 have a Stored XSS through insecure file uploads in `Social Networks`. Through it, a low-privilege user can execute arbitrary code in the admin user inbox, allowing takeover of the admin account. Version 1.11.34 fixes the issue.
How severe is CVE-2025-55208?: CVE-2025-55208 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-55208 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55208?: CVE-2025-55208 affects Chamilo Chamilo Lms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55208?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-55208 have an EU (EUVD) identifier?: Yes. CVE-2025-55208 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208326.
When was CVE-2025-55208 published?: CVE-2025-55208 was published on 2026-03-05 and last updated on 2026-06-17.

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-2vq2-826h-6hp6

Affected products (1)

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

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