Is CVE-2025-52564 in the CISA KEV catalog?

No. CVE-2025-52564 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-52564?

CVE-2025-52564 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2025-52564?

CVE-2025-52564 has an EPSS score of 0.19% (9th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-52564?

Upgrade chamilo lms to 1.11.30 or later.

CVE & CISA-KEV Catalog

CVE-2025-52564

MEDIUM

6.1

CVSS v3

NVD

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.

CWE-80

How to fix

Remediation Available

chamilo lmsNVD

Affected:< 1.11.30Fixed in:1.11.30CVE-2025-52564derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploit Intelligence

0.19%probability of exploitation in 30 days

9thpercentile

Low risk: more likely to be exploited than 9% of all known CVEs.

References

Patch2

Vendor Advisory1

github.com

Release Notes1

github.com

Related Vulnerabilities

Other CWE-80 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-21145	Medium	4.8	78%	-	-
CVE-2020-13562	Medium	6.1	78%	-	-
CVE-2020-13965	Medium	6.1	77%	KEV	Fix
CVE-2020-13564	Medium	6.1	76%	-	-
CVE-2020-13563	Medium	6.1	76%	-	-
CVE-2024-4439	High	7.2	71%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-03.