Use After Free Affecting openssl package, versions [,3.0.20)[3.1.0,3.3.7)[3.4.0,3.4.5)[3.5.0,3.5.6)[3.6.0,3.6.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-OPENSSL-15928870
- published8 Apr 2026
- disclosed7 Apr 2026
- creditIgor Morgenstern
Introduced: 7 Apr 2026
NewCVE-2026-28387 (opens in a new tab)How to fix?
Upgrade openssl to version 3.0.20, 3.3.7, 3.4.5, 3.5.6, 3.6.2 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the DANE client authentication process. An attacker can cause memory corruption, application crashes, or potentially execute arbitrary code by manipulating TLSA records with both PKIX-TA/PKIX-EE and DANE-TA certificate usages during client-server communication.
Note:
This is only exploitable if the client is configured to process both PKIX and DANE-TA usages and communicates with a server publishing a TLSA RRset containing both types of records.