Allocation of Resources Without Limits or Throttling in ClamAV - CVE-2026-20216

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Main Vulnerability Database Vulnerabilities #VU136661

Allocation of Resources Without Limits or Throttling in ClamAV - CVE-2026-20216

Published: July 1, 2026


Vulnerability identifier: #VU136661
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-20216
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: ClamAV
Affected software:
ClamAV

Detailed vulnerability description

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper enforcement of extraction limits in InstallShield archive handling when scanning a crafted InstallShield archive. A remote attacker can provide a specially crafted archive to cause a denial of service.

The issue can exhaust temporary storage by writing far more temporary data than intended.


How to mitigate CVE-2026-20216

Install security update from vendor's website.

Sources