How severe is CVE-2025-52564?

CVE-2025-52564 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-2025-52564 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-52564?

CVE-2025-52564 affects Chamilo Chamilo Lms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-52564?

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

Does CVE-2025-52564 have an EU (EUVD) identifier?

Yes. CVE-2025-52564 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208179.

When was CVE-2025-52564 published?

CVE-2025-52564 was published on 2026-03-02 and last updated on 2026-06-17.

CVE-2025-52564

CVE-2025-52564 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-80.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v4: 6.9
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208179
Weakness: CWE-80
Affected product: Chamilo Chamilo Lms
Published: 2026-03-02
Last modified: 2026-06-17

Description

Chamilo is a learning management system. Prior to version 1.11.30, the open parameter of help.php fails to properly sanitize user input. This allows an attacker to inject arbitrary HTML, such as underlined text, via a crafted URL. This issue has been patched in version 1.11.30.

Frequently asked questions

What is CVE-2025-52564?: Chamilo is a learning management system. Prior to version 1.11.30, the open parameter of help.php fails to properly sanitize user input. This allows an attacker to inject arbitrary HTML, such as underlined text, via a crafted URL. This issue has been patched in version 1.11.30.
How severe is CVE-2025-52564?: CVE-2025-52564 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-2025-52564 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-52564?: CVE-2025-52564 affects Chamilo Chamilo Lms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-52564?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-52564 have an EU (EUVD) identifier?: Yes. CVE-2025-52564 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208179.
When was CVE-2025-52564 published?: CVE-2025-52564 was published on 2026-03-02 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Chamilo Chamilo Lms

CVE-2026-33698 — Critical (CVSS 9.8): Chamilo LMS is a learning management system. Prior to 1.11.38, a chained attack can enable otherwise-blocked PHP code…
CVE-2026-28430 — Critical (CVSS 9.8): Chamilo LMS is a learning management system. Prior to version 1.11.34, there is an unauthenticated SQL injection…
CVE-2025-52998 — Critical (CVSS 9.8): Chamilo is a learning management system. Prior to version 1.11.30, in the application, deserialization of data is…
CVE-2025-50192 — Critical (CVSS 9.8): Chamilo is a learning management system. Prior to version 1.11.30, there is a time-based SQL Injection in found in…
CVE-2025-50190 — Critical (CVSS 9.8): Chamilo is a learning management system. Prior to version 1.11.30, there is an error-based SQL Injection via the GET…
CVE-2025-50187 — Critical (CVSS 9.8): Chamilo is a learning management system. Prior to version 1.11.28, parameter from SOAP request is evaluated without…

All CVEs affecting Chamilo Chamilo Lms →

Other CWE-80 vulnerabilities

CVE-2024-39363 — Critical (CVSS 9.6): A cross-site scripting (xss) vulnerability exists in the login.cgi set_lang_CountryCode() functionality of Wavlink…
CVE-2023-39216 — Critical (CVSS 9.6): Improper input validation in Zoom Desktop Client for Windows before 5.14.7 may allow an unauthenticated user to enable…
CVE-2025-53883 — Critical (CVSS 9.3): A Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability allows attackers to run…
CVE-2026-32891 — Critical (CVSS 9.0): Anchorr is a Discord bot for requesting movies and TV shows and receiving notifications when items are added to a media…
CVE-2026-57532 — High (CVSS 8.8): Malicious HTML content contained in the layout specification of a PDF ticket or badge layout was executed when the PDF…
CVE-2026-6002 — High (CVSS 8.8): Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in DivvyDrive Information…

Browse all CWE-80 vulnerabilities →