CVE-2021-3541
libxml2: Exponential entity expansion attack bypasses all existing protection mechanisms
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Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 13, 2021
Updated · October 14, 2026
Description
A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-400 · Uncontrolled Resource Consumption