Use After Free Affecting openvpn package, versions [2.6.0,2.6.21)[2.7_alpha1,2.7.5)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.4% (33rd percentile)

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  • Snyk IDSNYK-UNMANAGED-OPENVPN-18507732
  • published2 Aug 2026
  • disclosed30 Jul 2026
  • creditUnknown

Introduced: 30 Jul 2026

NewCVE-2026-13117  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade openvpn to version 2.6.21, 2.7.5 or higher.

Overview

Affected versions of this package are vulnerable to Use After Free via the TLS session promotion process. An attacker can cause memory to be freed prematurely by sending specially crafted requests after authenticating, which may result in denial of service or memory leakage.

CVSS Base Scores

version 4.0
version 3.1