Resource exhaustion in expat - CVE-2025-66382
Published: February 3, 2026
Vulnerability identifier: #VU122269
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-66382
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: libexpat.org
Affected software:
expat
expat
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources when processing large files. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
How to mitigate CVE-2025-66382
Install updates from vendor's website.